Hi Mark,
Thank you for providing the logs privately.
The EXPIRED_CLICK error you are encountering means that the click you are trying to upload a conversion to is too old or have occurred before the conversion window for the specified combination of conversion date and conversion name (default is 30 days). Upon investigation, the GCLID you are trying to upload a conversion to may have reached past the 30 days default conversion window. You may refer to this
guide for more details.
You will need to check the
ctcLookBackWindow duration to check the conversion window time. If it has indeed went past the duration, then there can no longer be any way to upload the said click into your account.
Regards,
Dannison
Google Ads API Team

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