Data element circular reference detected

[alcazes]

Expected Behaviour

We should be able to reference a data element inside another data element

Actual Behaviour

Error

{
    "name": "evaluatingRule",
    "timestampMs": 1698750499741,
    "attributes": {
        "logLevel": "error"
    },
    "messages": [
        "🚀",
        "Failed to execute \"Make Fetch Call\". Data element circular reference detected: platform -> eventType -> lifecycleShortCode -> eventType \n Error: Failed to execute \"Make Fetch Call\". Data element circular reference detected: platform -> eventType -> lifecycleShortCode -> eventType\n    at worker.js:1:6395\n    at worker.js:1:6063\n    at Array.map (<anonymous>)\n    at worker.js:1:5979\n    at getSettings (worker.js:1:10866)\n    at worker.js:1:6602\n    at worker.js:1:6063\n    at Array.map (<anonymous>)\n    at worker.js:1:5979\n    at getSettings (worker.js:1:13752)"
    ],
    "logLevel": "log",
    "context": {
        "ruleId": "RL8ff0fa7212044c8292174187be01e09f"
    }
},

Sample Code that illustrates the problem

There seems to be a bug in Adobe Event Forwarding:

Data Elements are as follow:

platform

eventType

lifecycleShortCode

[dompuiu]

@alcazes Can you provide a URL of the rule where you see this error. Or provide a screenshot of the Make Fetch call action config? Thanks!

[alcazes]

@dompuiu the URL is https://experience.adobe.com/#/@rbs/sname:prod/data-collection/eventForwarding/companies/COe5253eb028b44a8dbe0d4830477b7be6/properties/PR3f4c299f27f541dfbcd290cd3b62a916/rules/RL4c17b6ad344544e292dc5ac035f1c21f/ruleComponent/RCf5fc04e3ad5f4f63b27c6d44693ff1cb

The part of the rule which creates the issue is this one:

I also opened an issues on adobe/reactor-extension-core-edge#7 for the same behaviour.

I dig a bit dipper and I believe the issue is no even with your extensions but the turbine source code:
https://github.com/adobe/reactor-turbine-edge/blob/2117c319c32ed3315e004dc027da348eba18a5b3/src/createGetDataElementValue.js#L38

if (dataElementCallStack.includes(dataElementName)) {
    dataElementCallStack.push(dataElementName);

    return Promise.reject(
        new Error(
            `Data element circular reference detected: ${dataElementCallStack.join(
            ' -> '
          )}`
        )
    );
}

Based on this code you cannot create a data element to be reused in other data elements like in my case:

• eventType is initially used in the Fetch to return a value
• lifecycleShortCode is then used in payload of the Fetch request to return the application lifecycle and the logic of this data element relies on eventType to return correct value.
• Based on code snipset above the following eventName will be pushed in call stack eventType ==> lifecycleShortCode ==> eventType. When last eventType is pushed the circular reference error will be triggered.

Based on all that it seems that for now you cannot use a data element in other data elements as you would do with Adobe Launch.

I also create an Adobe support ticket for same E-001072880

Should I open an issue against reactor-turbine or your team will follow up ?

[dompuiu]

Yes, the issue is in reactor-turbine-edge. Thanks for logging this issue. We'll take it from here.

[dompuiu]

This issue is fixed in this release: https://github.com/adobe/reactor-turbine-edge/releases/tag/v2.3.3.

[dompuiu]

This fix was deployed today in production.