The prepayment matching program is the child program of the Autoinvoice import program and it is expected to trigger immediately after the Autoinvoice import is completed as per the intended design of the Oracle applications.
There is a time where the same is not working properly, means if any Autoinvoice import is completed between 00:00:00 and 00:59:59 in any day and this expected behavior is not working because the derivation logic for the scheduled time for submitting the prepayment matching program is based on 12 hours format whereas the API(fnd_request.submit_request) used to submit prepayment matching program considering the submit date as 24 hours format.
This has been identified as a bug in R12.1.3 and One-off Patch 10066143 is resolving the issue.
Metalink Note:(References)
Execution of Prepayment Matching Program (ARPREMAT) Scheduled 12 Hours After AutoInvoice is Completed (Doc ID 565431.1)
