Google Ads Conversion Adjustments: NO_CONVERSION_ACTION_FOUND

Google Tag Manager Server Container
1

Hi Stape community,

we are currently testing Google Ads Conversion Adjustments in server GTM and we are running into an issue when trying to send RESTATEMENT adjustments.

At this point we are focusing only on the following error:

NO_CONVERSION_ACTION_FOUND

We are using the Google Ads Conversion Adjustments flow and sending a request like this:

{
“conversionAdjustments”: [
{
“conversionAction”: “customers/3600715821/conversionActions/7609413534”,
“adjustmentType”: “RESTATEMENT”,
“restatementValue”: {
“adjustedValue”: 66.42,
“currencyCode”: “EUR”
},
“orderId”: 3309276,
“adjustmentDateTime”: “2026-05-27 08:26:30+00:00”
}
],
“partialFailure”: true,
“validateOnly”: false
}

The request returns HTTP 200, but in the response we get:

NO_CONVERSION_ACTION_FOUND
The conversion action specified in the adjustment request cannot be found. Make sure it’s available in this account.

The full error points to:

conversion_adjustments[0].conversion_action
customers/3600715821/conversionActions/7609413534

What is important in our case:

  • sending conversions through Google Data Manager works correctly

  • the issue appears only when trying to send conversion adjustments

  • the conversion action is configured on the MCC account, not on a standard single account

  • in Stape, the connected Google account email is the same as in the MCC account, so the user has direct access / connection between Stape and the Google Ads MCC account

  • we also performed a re-login to refresh the connection, but the issue still persists

This is what confuses us:
the original conversion flow works correctly through Google Data Manager, but the adjustment request for the same setup returns NO_CONVERSION_ACTION_FOUND.

Thank you for your help

2

Hello @Patrik_Roob

The core of the issue comes down to a strict rule within the Google Ads infrastructure: an API request for an adjustment must be sent directly to the Google Ads account that actually owns or manages the conversion action definition. While the standard upload of conversion data is seamlessly handled through Google Data Manager using the context of the child account, adjustment updates (such as RESTATEMENT or RETRACT) are subject to much stricter routing logic.

When loading a new conversion , Google Ads can redirect the request based on the GCLID or Order ID back to the child account that served the click.
However, regarding conversion adjustments, the Google Ads API documentation explicitly states:
“Only the account that manages the conversion action can import adjustments. If you try to import an adjustment using a different account… you will get a NO_CONVERSION_ACTION_FOUND error”.

Thank you :slight_smile: