How to disable the Prepayment Matching Program (ARPREMAT) from the AutoInvoice.

Disable the  Business Event  oracle.apps.ar.batch.AutoInvoice.run 

 System Administrator > Workflow > 

                       Administrator Workflow > Business Events 

 Search for the event: oracle.apps.ar.batch.AutoInvoice.run

 Click on Subscription icon.

 Locate the Function: AR_PREPAYMENTS.rule_select_prepayments

 Click on the pencil icon to update the subscription and change status to Disabled. 

                              Save your changes.