If the payment txn record moves to Error status from NPC Processing Start state, please refer to the error logs. If there is any error log with the subject like “Fundraising API Response Error createGiftCommitment / createGiftTransaction” and response body as per the sample screenshot below:
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Then please refer to the payment txn(s) moved to Error status and check the Frequency field of the payment txn. This error message is returned by Salesforce fundraising business process API when the frequency is incorrect or junk value.