*Subject:* *Bug Report: ConversionUploadService returns an invalid date
format error despite valid input (v21 API)*
*Body:*
Hello Google Ads API Support Team,
We are encountering a persistent issue when uploading offline conversions
via the Google Ads API (v21). We have been consistently receiving a
conversion_date_time format error, even though we have provided data that
conforms to the official documentation and the format specified in the
API's own error message.
*Problem Description:*
We are attempting to upload a single offline conversion using the
ConversionUploadService.upload_click_conversions method. The API
consistently returns an INVALID_ARGUMENT error with the following message:
The string date time's format should be yyyy-mm-dd hh:mm:ss+|-hh:m., at
conversions[0].conversion_date_time
*Steps to Reproduce (already performed on our end):*
To rule out any issues on our side, we have performed the following
isolated tests:
1.
We sent a test request using a hardcoded timestamp in the official ISO
8601 format (yyyy-MM-dd'T'HH:mm:ss+HH:mm) as per the documentation.
-
*Result:* The request was rejected with the error message shown above.
2.
We modified the timestamp to exactly match the format requested in the
API's error message (yyyy-mm-dd hh:mm:ss+|-hh:m.).
-
*Result:* The request was rejected again with the exact same error.
3.
We tried a third common format (yyyy-mm-dd hh:mm:ss+HHMM).
-
*Result:* This request was also rejected with the same error.
This behavior suggests that the API is not accepting the date format that
it is explicitly requesting.
*Technical Details for your Investigation:*
-
*Customer ID:* (Please insert your Customer ID here)
-
*API Version:* v21
-
*Test GCLID:*
Cj0KCQjw5FbHcyARisAHBx2wwiOd3WlMtlp71db_n4dZEpXx1ld_izq7_lybphj-ASLxsWbo2SOCcwaAgZ4EALw_wcB
-
*Conversion Action ID:* 7265775359
-
*conversion_date_time value we sent:* "2025-08-22 06:52:17+0000"
-
*Request ID:* (Please find this value in your full logs and insert it
here)
We kindly ask you to investigate this issue and provide us with a solution
or a valid workaround, as we are unable to successfully submit conversions
at this time.
Thank you for your assistance.
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