How to Register Budget Commitments Without POs or Customizations in Long-Term Contract Scenarios

Summary:
Customer implemented a model using Primary and Secondary Purchase Orders (POs) to manage long-term contracts with recurring payments and budget commitments. A customization is currently in place that automatically closes lines in the Primary PO when Secondary POs are created, to avoid double budget commitment.

Content (please ensure you mask any confidential information):
The customer's process is built around three components:

1. Primary Purchase Order: Used solely to generate an upfront budget commitment.
2. Secondary Purchase Orders: Created monthly for actual execution (invoice/payment). A customization ensures that when a secondary PO is created, corresponding lines in the primary PO are