Problem saving customer data via BadI ME_GUI_PO_CUST

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Dear developers,

I have a severe problem with using BadI ME_GUI_PO_CUST.

My intention is not to fill customer-appended fields in EKKO/EKPO

but to maintain PO related data in customer tables.

My BadI implementation works fine for transaction ME23N and ME21N

but whenever I want to save the PO in ME22N and only change one of my additional customer fields, a message says "No changes made."

In BadI ME_PROCESS_PO_CUST method FIELDSELECTION_HEADER the field status is set to '.' (input fields).

In BadI ME_GUI_PO_CUST method TRANSPORT_FROM_DYNP the exporting parameter re_changed is set to 'X'.

Is it possible that the transaction does not get it that changes were made because I do not change any of the original data via ...->set_data( ) in method TRANSPORT_TO_MODEL?

That would be a really nasty problem.

Please respond!

Kind regards,

Petra Peeters