We have a business requirement to hide a document item field (BSEG-XREF3) from specific users (i.e make the field invisible if the userid does not exist in a Z table) during FI invoice entry/maintenance/display via transactions FB01, FB02, FB03, FV50, FV60, FBV0, etc.. We know that it would be possible to do this via modification to the Process Before Output sections of LF040O00, LFDCBFM0, MF05AO00_DYNPRO_MODIFIZIEREN, MF05LO00, but would prefer to avoid modification if possible.
I believe that BADIs could possibly be used for screen enhancements, but have not had any previous exposure to BADIs, so I'm really not sure whether it's possible to use BADIs for our specific requirement. For example, using the advice given in the 2nd post in thread BADI for contract, I've searched SAPMF05A for all 'CALL METHOD cl_exithandler=>get_instance' statements, and have found that a single BADI (FBAS_CIN_MF05AFA0 - EWT - Downpayment Clearing - Tax transfer for CIN) seems to exist for FB01. The description of this BADI sounds completely inappropriate for our requirement. However, subsequent posts in that thread suggest far more BADIs for the relevant transaction than were given when searching the ABAP for all 'CALL METHOD cl_exithandler=>get_instance' statements, so I'm not convinced that the procedure I'm following will provide me with all the relevant BADIs for the transaction.
Please can you advise me how to identify which BADIs - if any - can be used to control screens before output for FB01 screen SAPMF05A/332 (SAP R/3 4.6C)?
Many thanks in anticipation,