Purchase order ME_PROCESS_PO_CUST not being called

Hello,

I've created an implementation of ME_PROCESS_PO_CUST, which is automatically migrated to Enhancement (I'm in Netweaver 2004s).

Then I go to ME21n and the badi is not being called. It is active, I have breakpoints inside the various methods, and I can create a PO from start to finished without opening debug mode.

Is there any problem with ME_PROCESS_PO_CUST in ECC 6.0?