diff --git a/.gitignore b/.gitignore
index bf2f462..3113d20 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 *.iml
 .gradle
-/local.properties
+local.properties
 .idea/
 /.idea/libraries
 /.idea/modules.xml
diff --git a/GenesisAndroid/build.gradle b/GenesisAndroid/build.gradle
index 8f1fd63..3a84a08 100644
--- a/GenesisAndroid/build.gradle
+++ b/GenesisAndroid/build.gradle
@@ -5,7 +5,7 @@ apply plugin: 'kotlin-kapt'
 
 ext {
     PUBLISH_GROUP_ID = 'com.emerchantpay.gateway'
-    PUBLISH_VERSION = '1.3.4'
+    PUBLISH_VERSION = '1.3.5'
     PUBLISH_ARTIFACT_ID = 'genesis-android'
     PUBLISH_DESCRIPTION = 'Genesis Android SDK'
     PUBLISH_URL = 'https://github.com/GenesisGateway/android_sdk'
@@ -27,7 +27,7 @@ android {
         minSdkVersion 19
         targetSdkVersion 33
         versionCode 1
-        versionName "1.3.4"
+        versionName "1.3.5"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/ErrorMessages.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/ErrorMessages.kt
index 87b9f86..3b0e8da 100644
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/ErrorMessages.kt
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/ErrorMessages.kt
@@ -25,4 +25,5 @@ object ErrorMessages {
     const val INVALID_REMINDERS_NUMBER = "Maximum number of 3 allowed reminders reached. You can't add more reminders."
     const val INVALID_CONSUMER_ID = "Invalid consumer_id. Max. length is 10 digits."
     const val REQUIRED_PARAMS_THREE_DS_V2 = "3DSv2 parameters are required for the following transaction types: Authorize3d, Sale3d, InitRecurringSale3d"
+    const val GOOGLE_PAY_MISSING_PAYMENT_SUBTYPE = "Missing mandatory 'payment_subtype' parameter for Google Pay transaction!"
 }
\ No newline at end of file
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/WPFTransactionTypes.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/WPFTransactionTypes.kt
index 908e410..348d864 100644
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/WPFTransactionTypes.kt
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/constants/WPFTransactionTypes.kt
@@ -18,6 +18,9 @@ enum class WPFTransactionTypes(val value: String) {
     // Card verification without any financial impact
     ACCOUNT_VERIFICATION("account_verification"),
 
+    // Payment using credit or debit cards connected to a consumer's Google account
+    GOOGLE_PAY("google_pay"),
+
     // Wallet-based payment
     EZEEWALLET("ezeewallet"),
 
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DescriptorAttributes.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DescriptorAttributes.kt
deleted file mode 100644
index 117cdd7..0000000
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DescriptorAttributes.kt
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.emerchantpay.gateway.genesisandroid.api.interfaces.financial
-
-import com.emerchantpay.gateway.genesisandroid.api.util.RequestBuilder
-
-interface DescriptorAttributes {
-
-    // Descriptor Params
-    fun setDynamicMerchantName(dynamicMerchantName: String): DescriptorAttributes {
-        requestBuilder.addElement("merchant_name", dynamicMerchantName)
-        return this
-    }
-
-    fun setDynamicMerchantCity(dynamicMerchantCity: String): DescriptorAttributes {
-        requestBuilder.addElement("merchant_city", dynamicMerchantCity)
-        return this
-    }
-
-    fun buildDescriptorParams(): RequestBuilder {
-        return requestBuilder
-    }
-
-    companion object {
-
-        val requestBuilder = RequestBuilder("")
-    }
-}
\ No newline at end of file
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DynamicDescriptorAttributes.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DynamicDescriptorAttributes.kt
new file mode 100644
index 0000000..5fdd58c
--- /dev/null
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/DynamicDescriptorAttributes.kt
@@ -0,0 +1,32 @@
+package com.emerchantpay.gateway.genesisandroid.api.interfaces.financial
+
+import com.emerchantpay.gateway.genesisandroid.api.util.RequestBuilder
+
+interface DynamicDescriptorAttributes {
+    fun setMerchantName(merchantName: String): DynamicDescriptorAttributes {
+        requestBuilder.addElement("merchant_name", merchantName.take(MERCHANT_NAME_LENGTH))
+        return this
+    }
+
+    fun setMerchantCity(merchantCity: String): DynamicDescriptorAttributes {
+        requestBuilder.addElement("merchant_city", merchantCity.take(MERCHANT_CITY_LENGTH))
+        return this
+    }
+
+    fun setSubMerchantId(subMerchantId: String): DynamicDescriptorAttributes {
+        requestBuilder.addElement("sub_merchant_id", subMerchantId.take(SUB_MERCHANT_ID_LENGTH))
+        return this
+    }
+
+    fun buildDescriptorParams(): RequestBuilder {
+        return requestBuilder
+    }
+
+    companion object {
+        private val requestBuilder = RequestBuilder("")
+
+        private const val MERCHANT_NAME_LENGTH = 25
+        private const val MERCHANT_CITY_LENGTH = 13
+        private const val SUB_MERCHANT_ID_LENGTH = 15
+    }
+}
\ No newline at end of file
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/GooglePayAttributes.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/GooglePayAttributes.kt
new file mode 100644
index 0000000..b7fbc16
--- /dev/null
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/GooglePayAttributes.kt
@@ -0,0 +1,20 @@
+package com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay
+
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions.GooglePayPaymentSubtype
+import com.emerchantpay.gateway.genesisandroid.api.util.RequestBuilder
+
+interface GooglePayAttributes {
+    fun setPaymentSubtype(paymentSubtype: GooglePayPaymentSubtype): GooglePayAttributes = apply {
+        requestBuilder.addElement(PAYMENT_SUBTYPE, paymentSubtype.toString())
+    }
+
+    fun buildGooglePayParams(): RequestBuilder {
+        return requestBuilder
+    }
+
+    companion object {
+        private val requestBuilder = RequestBuilder("")
+
+        const val PAYMENT_SUBTYPE = "payment_subtype"
+    }
+}
\ No newline at end of file
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/definitions/GooglePayPaymentSubtype.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/definitions/GooglePayPaymentSubtype.kt
new file mode 100644
index 0000000..14ea862
--- /dev/null
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/interfaces/financial/googlepay/definitions/GooglePayPaymentSubtype.kt
@@ -0,0 +1,11 @@
+package com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions
+
+enum class GooglePayPaymentSubtype(private val value: String) {
+    AUTHORIZE("authorize"),
+    SALE("sale"),
+    INIT_RECURRING_SALE("init_recurring_sale");
+
+    override fun toString(): String {
+        return value
+    }
+}
\ No newline at end of file
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/request/PaymentRequest.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/request/PaymentRequest.kt
index 98d8812..ba97eeb 100644
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/request/PaymentRequest.kt
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/request/PaymentRequest.kt
@@ -10,8 +10,10 @@ import com.emerchantpay.gateway.genesisandroid.api.interfaces.BaseAttributes
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.RiskParamsAttributes
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.customerinfo.CustomerInfoAttributes
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.AsyncAttributes
-import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.DescriptorAttributes
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.DynamicDescriptorAttributes
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.PaymentAttributes
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.GooglePayAttributes
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions.GooglePayPaymentSubtype
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.threedsv2.ThreeDsV2Attributes
 import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.threedsv2.definitions.ThreeDsV2ControlDeviceType
 import com.emerchantpay.gateway.genesisandroid.api.internal.validation.GenesisValidator
@@ -28,8 +30,8 @@ import java.math.MathContext
 import java.util.*
 import kotlin.math.pow
 
-open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes, DescriptorAttributes,
-    AsyncAttributes, RiskParamsAttributes, ThreeDsV2Attributes {
+open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes, DynamicDescriptorAttributes,
+    AsyncAttributes, RiskParamsAttributes, ThreeDsV2Attributes, GooglePayAttributes {
     // Request Builder
     private var paymentRequestBuilder: RequestBuilder? = null
 
@@ -107,6 +109,9 @@ open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes,
                     "authorize3d", "sale3d", "init_recurring_sale3d" ->
                         validator?.isValidThreeDsV2Request(this)!! && validator?.isValidRequest(this)!!
 
+                    WPFTransactionTypes.GOOGLE_PAY.value ->
+                        validator?.isValidGooglePayRequest(this)!! && validator?.isValidRequest(this)!!
+
                     else -> validator?.isValidRequest(this)!!
                 }
             }
@@ -124,6 +129,9 @@ open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes,
     private var recurringType: String? = null
     private var recurringCategory: String? = null
 
+    // Google Pay
+    internal var googlePayPaymentSubtype: GooglePayPaymentSubtype? = null
+
     @Throws(IllegalAccessException::class)
     constructor(context: Context?, transactionId: String?, amount: BigDecimal?, currency: Currency, customerEmail: String?,
                 customerPhone: String?, billingAddress: PaymentAddress?, notificationUrl: String?,
@@ -394,6 +402,11 @@ open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes,
         this.recurringCategory = recurringCategory.value
     }
 
+    fun setGooglePayPaymentSubtype(googlePayPaymentSubtype: GooglePayPaymentSubtype?) {
+        this.googlePayPaymentSubtype = googlePayPaymentSubtype
+        googlePayPaymentSubtype?.let { setPaymentSubtype(it) }
+    }
+
     override fun toXML(): String {
         return buildRequest("wpf_payment")!!.toXML()
     }
@@ -425,11 +438,15 @@ open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes,
                     .addElement("shipping_address", buildShippingAddress().toXML())
                     .addElement("transaction_types", transactionTypes)
                     .addElement("risk_params", buildRiskParams().toXML())
-                    .addElement("threeds_v2_params", buildThreeDsV2Attributes().toXML())
                     .addElement("dynamic_descriptor_params", buildDescriptorParams().toXML())
+                    .addElement(buildGooglePayParams().toXML())
 
                 val transactionTypesList = transactionTypes.transactionTypesList
 
+                if (canAddThreeDsV2Params(transactionTypesList)) {
+                    paymentRequestBuilder?.addElement("threeds_v2_params", buildThreeDsV2Attributes().toXML())
+                }
+
                 if (transactionTypesList.contains("authorize")
                     || transactionTypesList.contains("authorize3d")
                     || transactionTypesList.contains("sale")
@@ -468,6 +485,9 @@ open class PaymentRequest : Request, PaymentAttributes, CustomerInfoAttributes,
         }
     }
 
+    private fun canAddThreeDsV2Params(transactionTypesList: ArrayList<String>) =
+        transactionTypesList.none { it == WPFTransactionTypes.GOOGLE_PAY.value }
+
     fun getError(): GenesisError? {
         when {
             validator?.error != null -> error = validator?.error
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/validation/GenesisValidator.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/validation/GenesisValidator.kt
index a9f652c..0fcffd0 100644
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/validation/GenesisValidator.kt
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/internal/validation/GenesisValidator.kt
@@ -1,6 +1,7 @@
 package com.emerchantpay.gateway.genesisandroid.api.internal.validation
 
 import com.emerchantpay.gateway.genesisandroid.api.constants.ErrorMessages
+import com.emerchantpay.gateway.genesisandroid.api.constants.ErrorMessages.GOOGLE_PAY_MISSING_PAYMENT_SUBTYPE
 import com.emerchantpay.gateway.genesisandroid.api.constants.ErrorMessages.REQUIRED_PARAMS_THREE_DS_V2
 import com.emerchantpay.gateway.genesisandroid.api.constants.ReminderConstants
 import com.emerchantpay.gateway.genesisandroid.api.constants.WPFTransactionTypes
@@ -247,6 +248,13 @@ open class GenesisValidator {
         }
     }
 
+    fun isValidGooglePayRequest(request: PaymentRequest): Boolean {
+        return if (request.googlePayPaymentSubtype == null) {
+            error = GenesisError(GOOGLE_PAY_MISSING_PAYMENT_SUBTYPE)
+            false
+        } else true
+    }
+
     private fun isValidRegex(request: PaymentRequest): Boolean? {
         val isValidAmount = validateAmount(request.amount)
         val isValidEmail = validateEmail(request.customerEmail)
diff --git a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/ui/GenesisWebViewActivity.kt b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/ui/GenesisWebViewActivity.kt
index bbf1453..99a4a90 100644
--- a/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/ui/GenesisWebViewActivity.kt
+++ b/GenesisAndroid/src/main/java/com/emerchantpay/gateway/genesisandroid/api/ui/GenesisWebViewActivity.kt
@@ -62,7 +62,9 @@ open class GenesisWebViewActivity : Activity() {
     }
 
     fun popCurrentWebView() {
-        genesisWebViews?.pop()
+        if (genesisWebViews!!.size > 1)
+            genesisWebViews?.pop()
+
         genesisWebViews?.pop()?.let { pushNewWebView(it) }
     }
 
@@ -98,7 +100,7 @@ open class GenesisWebViewActivity : Activity() {
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when {
             item.itemId == android.R.id.home -> {
-                setResult(Activity.RESULT_CANCELED)
+                setResult(RESULT_CANCELED)
                 finish()
                 return true
             }
diff --git a/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/GooglePayAttributesUnitTest.kt b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/GooglePayAttributesUnitTest.kt
new file mode 100644
index 0000000..f66dd0e
--- /dev/null
+++ b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/GooglePayAttributesUnitTest.kt
@@ -0,0 +1,24 @@
+package com.emerchantpay.gateway.genesisandroid
+
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.GooglePayAttributes
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions.GooglePayPaymentSubtype.*
+import junit.framework.TestCase.assertEquals
+import org.junit.Test
+import org.junit.jupiter.api.DisplayName
+
+internal class GooglePayAttributesUnitTest : GooglePayAttributes {
+    @Test
+    @DisplayName("Given attributes with assigned values, When serialized to XML, Then should be valid")
+    fun testValidXmlIsGeneratedOnSerialization() {
+        setPaymentSubtype(AUTHORIZE)
+
+        val generatedXml = buildGooglePayParams().toXML()
+
+        assertEquals(EXPECTED_XML, generatedXml)
+    }
+
+    companion object {
+        private val EXPECTED_XML =
+            "<payment_subtype>authorize</payment_subtype>"
+    }
+}
\ No newline at end of file
diff --git a/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/internal/PaymentRequestUnitTest.kt b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/internal/PaymentRequestUnitTest.kt
index 50a4b79..ec47c55 100644
--- a/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/internal/PaymentRequestUnitTest.kt
+++ b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/internal/PaymentRequestUnitTest.kt
@@ -5,21 +5,29 @@ import com.emerchantpay.gateway.genesisandroid.api.constants.ReminderConstants
 import com.emerchantpay.gateway.genesisandroid.api.constants.WPFTransactionTypes
 import com.emerchantpay.gateway.genesisandroid.api.constants.recurring.RecurringCategory
 import com.emerchantpay.gateway.genesisandroid.api.constants.recurring.RecurringType
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions.GooglePayPaymentSubtype
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.threedsv2.definitions.*
 import com.emerchantpay.gateway.genesisandroid.api.internal.request.PaymentRequest
 import com.emerchantpay.gateway.genesisandroid.api.internal.request.TransactionTypesRequest
-import com.emerchantpay.gateway.genesisandroid.api.models.*
+import com.emerchantpay.gateway.genesisandroid.api.models.Country
 import com.emerchantpay.gateway.genesisandroid.api.models.Currency
+import com.emerchantpay.gateway.genesisandroid.api.models.PaymentAddress
+import com.emerchantpay.gateway.genesisandroid.api.models.Reminder
+import com.emerchantpay.gateway.genesisandroid.api.models.threedsv2.ThreeDsV2CardHolderAccountParams
+import com.emerchantpay.gateway.genesisandroid.api.models.threedsv2.ThreeDsV2MerchantRiskParams
+import com.emerchantpay.gateway.genesisandroid.api.models.threedsv2.ThreeDsV2Params
+import com.emerchantpay.gateway.genesisandroid.api.models.threedsv2.ThreeDsV2RecurringParams
 import io.mockk.mockk
 import org.junit.Assert.*
 import org.junit.Before
 import org.junit.Test
 import java.math.BigDecimal
 import java.net.MalformedURLException
+import java.text.SimpleDateFormat
 import java.util.*
 
 
 class PaymentRequestUnitTest {
-
     private var context: Context? = null
 
     private var paymentRequest: PaymentRequest? = null
@@ -30,7 +38,11 @@ class PaymentRequestUnitTest {
     @Before
     @Throws(IllegalAccessException::class)
     fun mockParams() {
-        context = mockk<Context>(relaxed = true)
+        createPaymentRequest()
+    }
+
+    private fun createPaymentRequest(transactionType: WPFTransactionTypes = WPFTransactionTypes.SALE) {
+        context = mockk(relaxed = true)
 
         // Generate unique Id
         val uniqueId = UUID.randomUUID().toString()
@@ -43,7 +55,7 @@ class PaymentRequestUnitTest {
         // Transaction types
         // Create Transaction types
         transactionTypes = TransactionTypesRequest()
-        transactionTypes!!.addTransaction(WPFTransactionTypes.SALE)
+        transactionTypes!!.addTransaction(transactionType)
 
         // Payment paymentRequest
         paymentRequest = PaymentRequest(context!!, uniqueId,
@@ -52,6 +64,42 @@ class PaymentRequestUnitTest {
             "https://example.com", transactionTypes!!)
 
         paymentRequest?.setConsumerId("123456")
+
+        val threeDsV2Params = ThreeDsV2Params.build {
+            purchaseCategory = ThreeDsV2PurchaseCategory.GOODS
+
+            val merchantRiskPreorderDate = SimpleDateFormat("dd-MM-yyyy").calendar.apply {
+                time = Date()
+                add(Calendar.DATE, 5)
+            }.time
+
+            merchantRisk = ThreeDsV2MerchantRiskParams(
+                ThreeDsV2MerchantRiskShippingIndicator.DIGITAL_GOODS,
+                ThreeDsV2MerchantRiskDeliveryTimeframe.SAME_DAY,
+                ThreeDsV2MerchantRiskReorderItemsIndicator.REORDERED,
+                ThreeDsV2MerchantRiskPreorderPurchaseIndicator.MERCHANDISE_AVAILABLE,
+                merchantRiskPreorderDate,
+                true, 3
+            )
+
+            cardHolderAccount = ThreeDsV2CardHolderAccountParams(
+                SimpleDateFormat("dd-MM-yyyy").parse("11-02-2021"),
+                ThreeDsV2CardHolderAccountUpdateIndicator.UPDATE_30_TO_60_DAYS,
+                SimpleDateFormat("dd-MM-yyyy").parse("13-02-2021"),
+                ThreeDsV2CardHolderAccountPasswordChangeIndicator.PASSWORD_CHANGE_NO_CHANGE,
+                SimpleDateFormat("dd-MM-yyyy").parse("10-01-2021"),
+                ThreeDsV2CardHolderAccountShippingAddressUsageIndicator.ADDRESS_USAGE_MORE_THAN_60DAYS,
+                SimpleDateFormat("dd-MM-yyyy").parse("10-01-2021"),
+                2, 129, 1, 31,
+                ThreeDsV2CardHolderAccountSuspiciousActivityIndicator.NO_SUSPICIOUS_OBSERVED,
+                ThreeDsV2CardHolderAccountRegistrationIndicator.REGISTRATION_30_TO_60_DAYS,
+                SimpleDateFormat("dd-MM-yyyy").parse("03-01-2021")
+            )
+
+            recurring = ThreeDsV2RecurringParams()
+        }
+
+        paymentRequest?.setThreeDsV2Params(threeDsV2Params)
     }
 
     @Test
@@ -194,11 +242,37 @@ class PaymentRequestUnitTest {
         paymentRequest!!.isValidData?.let { assertTrue(it) }
     }
 
-
     @Test
     fun testRecurringParams() {
         paymentRequest?.setRecurringType(RecurringType.INITIAL)
         paymentRequest?.setRecurringCategory(RecurringCategory.SUBSCRIPTION)
         paymentRequest!!.isValidData?.let { assertTrue(it) }
     }
+
+    @Test
+    fun testValidGooglePayTransactionRequest() {
+        createPaymentRequest(WPFTransactionTypes.GOOGLE_PAY)
+        paymentRequest?.setGooglePayPaymentSubtype(GooglePayPaymentSubtype.AUTHORIZE)
+
+        paymentRequest?.transactionTypes?.transactionTypesList?.any { it == WPFTransactionTypes.GOOGLE_PAY.value }
+            ?.let { assertTrue(it) }
+
+        paymentRequest?.toXML()?.let { it.run {
+            assertTrue(contains("payment_subtype"))
+            assertFalse(contains("threeds_v2_params"))
+        } }
+    }
+
+    @Test
+    fun testInvvalidGooglePayTransactionRequest() {
+        createPaymentRequest(WPFTransactionTypes.GOOGLE_PAY)
+
+        paymentRequest?.transactionTypes?.transactionTypesList?.any { it == WPFTransactionTypes.GOOGLE_PAY.value }
+            ?.let { assertTrue(it) }
+
+        paymentRequest?.isValidData?.let { assertFalse(it) }
+        paymentRequest?.toXML()?.let { it.run {
+            assertFalse(contains("payment_subtype"))
+        } }
+    }
 }
\ No newline at end of file
diff --git a/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/validation/GenesisValidatorUnitTest.kt b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/validation/GenesisValidatorUnitTest.kt
index 8af8ddd..7093ff4 100644
--- a/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/validation/GenesisValidatorUnitTest.kt
+++ b/GenesisAndroid/src/test/java/com/emerchantpay/gateway/genesisandroid/validation/GenesisValidatorUnitTest.kt
@@ -6,11 +6,12 @@ import com.emerchantpay.gateway.genesisandroid.api.constants.ReminderConstants
 import com.emerchantpay.gateway.genesisandroid.api.constants.WPFTransactionTypes
 import com.emerchantpay.gateway.genesisandroid.api.constants.recurring.RecurringCategory
 import com.emerchantpay.gateway.genesisandroid.api.constants.recurring.RecurringType
+import com.emerchantpay.gateway.genesisandroid.api.interfaces.financial.googlepay.definitions.GooglePayPaymentSubtype
 import com.emerchantpay.gateway.genesisandroid.api.internal.request.PaymentRequest
 import com.emerchantpay.gateway.genesisandroid.api.internal.request.TransactionTypesRequest
 import com.emerchantpay.gateway.genesisandroid.api.internal.validation.GenesisValidator
-import com.emerchantpay.gateway.genesisandroid.api.models.*
 import com.emerchantpay.gateway.genesisandroid.api.models.Currency
+import com.emerchantpay.gateway.genesisandroid.api.models.*
 import io.mockk.mockk
 import org.junit.Assert.*
 import org.junit.Before
@@ -49,7 +50,11 @@ class GenesisValidatorUnitTest {
     @Before
     @Throws(IllegalAccessException::class)
     fun setup() {
-        context = mockk<Context>(relaxed = true)
+        createPaymentRequest(listOf(WPFTransactionTypes.AUTHORIZE, WPFTransactionTypes.EZEEWALLET))
+    }
+
+    private fun createPaymentRequest(transactions: List<WPFTransactionTypes>) {
+        context = mockk(relaxed = true)
         validator = GenesisValidator()
 
         // Intitial params
@@ -64,22 +69,20 @@ class GenesisValidatorUnitTest {
 
         // Address
         billingAddress = PaymentAddress("John", "Doe",
-                "address1", "", "10000", "New York",
-                "state", Country().getCountry("United States")!!)
+            "address1", "", "10000", "New York",
+            "state", Country().getCountry("United States")!!)
 
         // Transaction types list
         transactionTypes = TransactionTypesRequest()
-        transactionTypes!!.addTransaction(WPFTransactionTypes.AUTHORIZE)
-        transactionTypes!!.addTransaction(WPFTransactionTypes.EZEEWALLET)
+        transactions.forEach { transactionTypes!!.addTransaction(it) }
 
         // Payment request
         request = context?.let {
             PaymentRequest(it, transactionId!!, amount!!, Currency.USD,
-                    customerEmail!!, customerPhone!!, billingAddress!!, notificationUrl, transactionTypes!!)
+                customerEmail!!, customerPhone!!, billingAddress!!, notificationUrl, transactionTypes!!)
         }
     }
 
-
     // Transaction Id
     @Test
     fun testTransactionId() {
@@ -261,4 +264,12 @@ class GenesisValidatorUnitTest {
         request?.setRecurringCategory(RecurringCategory.SUBSCRIPTION)
         assertTrue(request?.let { validator!!.isValidRequest(it) }!!)
     }
+
+    @Test
+    fun testValidDataWithGooglePayTransaction() {
+        createPaymentRequest(listOf(WPFTransactionTypes.GOOGLE_PAY))
+
+        request?.setGooglePayPaymentSubtype(GooglePayPaymentSubtype.INIT_RECURRING_SALE)
+        assertTrue(request?.let { validator!!.isValidRequest(it) }!!)
+    }
 }
diff --git a/README.md b/README.md
index 8d1e2a7..d2d67a8 100644
--- a/README.md
+++ b/README.md
@@ -31,7 +31,7 @@ cd GenesisAndroid
 * Add the dependency in your build.gradle:
 ```
 dependencies {
-  implementation 'com.emerchantpay.gateway:genesis-android:1.3.4'
+  implementation 'com.emerchantpay.gateway:genesis-android:1.3.5'
 }
 ```
 
@@ -320,30 +320,30 @@ Set usage, description, lifetime
 
 ```kotlin
 paymentRequest.setUsage("TICKETS")
-        paymentRequest.setDescription("Description")
-        paymentRequest.setLifetime(60)
+paymentRequest.setDescription("Description")
+paymentRequest.setLifetime(60)
 ```
 
 ```java
-paymentRequest.setUsage("TICKETS")
-        paymentRequest.setDescription("Description")
-        paymentRequest.setLifetime(60);
+paymentRequest.setUsage("TICKETS");
+paymentRequest.setDescription("Description");
+paymentRequest.setLifetime(60);
 ```
 
 Set shipping address
 
 ```kotlin
-val shippingAddress = PaymentAddress("John", "Doe",
-                "Fifth avenue 1", "Fifth avenue 1", "10000", "New York",
-                "Washington", Country.UnitedStates)
+val shippingAddress = PaymentAddress("John", "Doe", 
+    "Fifth avenue 1", "Fifth avenue 1", "10000", "New York",
+    "Washington", Country.UnitedStates)
 
 paymentRequest.setShippingAddress(shippingAddress)
 ```
 
 ```java
 PaymentAddress shippingAddress = nnew PaymentAddress("John", "Doe",
-                "Fifth avenue 1", "Fifth avenue 1", "10000", "New York",
-                "Washington", new Country().Companion.getUnitedStates(););
+        "Fifth avenue 1", "Fifth avenue 1", "10000", "New York",
+        "Washington", new Country().Companion.getUnitedStates());
 
 paymentRequest.setShippingAddress(shippingAddress);
 ```
@@ -353,12 +353,12 @@ Set Risk Params
 ```kotlin
 // Risk params
 val riskParams = RiskParams("1002547", "1DA53551-5C60-498C-9C18-8456BDBA74A9",
-                "987-65-4320", "12-34-56-78-9A-BC", "123456",
-                "emil@example.com", "+49301234567", "245.253.2.12",
-                "10000000000", "1234", "100000000", "John",
-                "Doe", "US", "test", "245.25 3.2.12",
-                "test", "test123456", "Bin name",
-                "+49301234567")
+    "987-65-4320", "12-34-56-78-9A-BC", "123456",
+    "emil@example.com", "+49301234567", "245.253.2.12",
+    "10000000000", "1234", "100000000", "John",
+    "Doe", "US", "test", "245.25 3.2.12",
+    "test", "test123456", "Bin name",
+    "+49301234567")
 
 paymentRequest.setRiskParams(riskParams)
 ```
@@ -366,12 +366,12 @@ paymentRequest.setRiskParams(riskParams)
 ```java
 // Risk params
 RiskParams riskParams = new RiskParams("1002547", "1DA53551-5C60-498C-9C18-8456BDBA74A9",
-                "987-65-4320", "12-34-56-78-9A-BC", "123456",
-                "emil@example.com", "+49301234567", "245.253.2.12",
-                "10000000000", "1234", "100000000", "John",
-                "Doe", "US", "test", "245.25 3.2.12",
-                "test", "test123456", "Bin name",
-                "+49301234567");
+        "987-65-4320", "12-34-56-78-9A-BC", "123456",
+        "emil@example.com", "+49301234567", "245.253.2.12",
+        "10000000000", "1234", "100000000", "John",
+        "Doe", "US", "test", "245.25 3.2.12",
+        "test", "test123456", "Bin name",
+        "+49301234567");
 
 paymentRequest.setRiskParams(riskParams);
 ```
@@ -465,7 +465,7 @@ paymentRequest.setThreeDsV2Params(threeDsV2Params);
 Set Recurring Params
 
 ```kotlin
- // Create Transaction types
+// Create Transaction types
 val transactionTypes = TransactionTypesRequest()
 transactionTypes.addTransaction(WPFTransactionTypes.SALE)
 
@@ -477,7 +477,7 @@ transactionTypes.setMode(RecurringMode.AUTOMATIC)
         .setAmount(500)
         .setMaxCount(10)
 
- // Init WPF API request
+// Init WPF API request
 val paymentRequest = PaymentRequest(this, uniqueId,
         BigDecimal("2.00"), Currency.USD,
         "john@example.com", "+555555555", billingAddress,
@@ -514,6 +514,39 @@ paymentRequest.setRecurringCategory(RecurringCategory.SUBSCRIPTION);
 // ...
 ```
 
+Set Google Pay
+
+```kotlin
+// Create Transaction types and add Google Pay transaction
+val transactionTypes = TransactionTypesRequest()
+transactionTypes.addTransaction(WPFTransactionTypes.GOOGLE_PAY)
+
+// Init WPF API request
+val paymentRequest = PaymentRequest(this, uniqueId,
+    BigDecimal("2.00"), Currency.USD,
+    "john@example.com", "+555555555", billingAddress,
+    "https://example.com", transactionTypes)
+
+// Add Google Pay transaction subtype (one of GooglePayPaymentSubtype.AUTHORIZE, 
+// GooglePayPaymentSubtype.SALE or GooglePayPaymentSubtype.INIT_RECURRING_SALE) 
+paymentRequest?.setGooglePayPaymentSubtype(GooglePayPaymentSubtype.SALE)
+```
+
+```java
+// Create Transaction types and add Google Pay transaction
+TransactionTypesRequest transactionTypes = new TransactionTypesRequest();
+transactionTypes.addTransaction(WPFTransactionTypes.GOOGLE_PAY);
+
+// Init WPF API request
+PaymentRequest paymentRequest = new PaymentRequest(this, uniqueId,
+    new BigDecimal("2.00"), new Currency().Companion.getUSD(),
+    "john@example.com", "+555555555", billingAddress,
+    "https://example.com", transactionTypes);
+
+// Add Google Pay transaction subtype (one of GooglePayPaymentSubtype.AUTHORIZE, 
+// GooglePayPaymentSubtype.SALE or GooglePayPaymentSubtype.INIT_RECURRING_SALE) 
+paymentRequest.setGooglePayPaymentSubtype(GooglePayPaymentSubtype.SALE);
+```
 
 Running Tests
 --------------