PPM Accounted transaction consuming GL budget twice

Summary:

Hi Experts, We are bringing project-based payroll entries to PPM via a custom interface. We potentially have an issue where funds is reserved twice 1) when Payroll entries goes to GL and reserve budget via standard interface 2) when the custom interface from Payroll to PPM run to bring accounted transactions and then it checks the PPM and GL budget.  

Since GL budget is reserved twice for the same transaction, it's not acceptable to the client. While I understand this is the expected behavior to check all the available budgets, is there a way to avoid double reservation of the budget?