We are actually using a call transaction to create FI documents. However, we need that the 'created by' field will be filled with a value that we set via our customer program.
Currently, all documents creation via this call transaction use the sy-uname value. Even if we try to update this value (sy-uname) before using call transaction, the new value isn't taken into consideration.
I wish you can provide us a solution to get the FI documents with the suitable usernames.
Waiting for your answer.