Hi,
Thank you for reaching out to the Google Ads API support team.
As per provided information, I understand that you are getting the "The imported gclid could not be decoded. Make sure you have not modified the click IDs." (UNPARSEABLE_GCLID) error while uploading the conversion events.
The possible reason for this is that you are uploading GCLID that does not exist. With this, to help you determine the GCLIDs that you can upload as conversions, then I can recommend generating reports using the
click_view report. I would suggest using different
counting type. Additionally, you can use this
conversion_action report to retrieve and check conversion action instances. For your reference, you may also refer to this
help center article about conversion counting options.
If in the event that you are using GCLIDs that are generated from the said report but the error persists, kindly provide us with the complete updated API logs (
request and
response logs with
request-id and
request header) generated at your end to better assist you further.
If you are using a client library and haven't enabled the logging yet, I would request you to enable logging for the specific client library that you are using. You can refer to the guides
Java,
.Net,
PHP,
Python,
Ruby or
Perl to enable logging at your end. For REST interface requests, you can enable logging via the curl command by using the -i flag.
You can send the details via Reply privately to the author option, or direct private reply to this email.
Thanks,
The Google Ads API Team.