MIRO Payment Block

Hello Experts,

I have new requirement: "Block for payment every invoice below 1000 USD. This invoices should be blocked for payment until superior authorization and then collected to be paid via external system. We need to build an PS2 file to export from SAP."

With this in mind, my solution is:

1.     Create new Payment Block Reason. Eg. "Z";
2.     @MIRO: Block for Payment every new invoice in USD currency and below 1000 USD;
3.     The user unblock every invoice in MRBR;
4.     Develop a customized solution to identify every invoice to be considered and then generate PS2 file.

I'm trying to find the best solution for automatically block invoices at MIRO. At this time my option would be MRM_PAYMENT_TERMS BAdi. Any other option?

Regards,

Vicente