How to update payment file status as "ACKNOWLEDGEMENT" without bank ACK files

Summary:

Hi All

This is a question about payment file status which is submitted by PPR. After 24A, the status of the payment file has been repleaced by "Pending action to address acknowledgment failure", but before 24A is Transmitted.

Content (please ensure you mask any confidential information):

We can not use ack files returned by bank to invoke " Retrieve Disbursement Acknowledgments" process and change the payment file status into "ACKNOWLEDGEMENT" directly. And end user do not accept do this action manually. We want to find another approach to do the payment file acknowledgement automatically, such as customization, but no API for payment file. Do you have any suggestion and action plan?