diff --git a/source/integrate-with-integration-environment/integrate-with-code-flow.html.md.erb b/source/integrate-with-integration-environment/integrate-with-code-flow.html.md.erb
index 8c11cfe7..defa3c08 100644
--- a/source/integrate-with-integration-environment/integrate-with-code-flow.html.md.erb
+++ b/source/integrate-with-integration-environment/integrate-with-code-flow.html.md.erb
@@ -596,14 +596,13 @@ Content-Type: application/json
The request is missing a parameter so the server cannot proceed with the request. This error may also be returned if the request includes an unsupported parameter or repeats a parameter.
Review your parameters and check they are supported and not repeated. |
- | invalid_client |
- Client authentication failed, which could be caused by the request containing an invalid client ID.
To resolve, check your client ID matches the client ID you had when you registered your service to use GOV.UK One Login.
- |
+ invalid_client |
+ Client authentication failed, which could be caused by the request containing an invalid client_ID or an issue in validating the signature of the client_assertion.
To resolve, check: |
- | invalid_grant |
- The authorisation code is invalid or expired. This is also the error which would return if the redirect URL given in the authorisation request does not match the URL provided in this access token request. |
-
+ invalid_grant |
+ The authorisation code is invalid or expired. This is also the error which would return if the redirect URL given in the authorisation request does not match the URL provided in this access token request. |
+
| unauthorized_client |
The application is successfully authenticated, but it's not registered to use the requested grant type.
@@ -686,7 +685,7 @@ Content-Type: application/json
|
| invalid_client |
- Client authentication failed, which could be caused by the request containing an invalid client ID.
To resolve, check your client ID matches the client ID you had when you registered your service to use GOV.UK One Login.
+ | Client authentication failed, which could be caused by the request containing an invalid client_ID or an issue in validating the signature of the client_assertion.
To resolve, check: |