BTE to substitute BSEG-BZDAT in MIRO doesn't work

Hi all,

I need to substitute the field BSEG-BZDAT with BKPF-BLDAT in all asset invoices postings through MIRO, in order to get the correct value date in AM for depreciation calculation.

After set a breakpoint in function module BF_FUNCTIONS_FIND, I got the correct event was 1025. My client has a 'Z' function modul for this event, so the basis guy added the corresponding programming code into it.

When I run MIRO, substitution works OK, but after the Z function modul, the system goes into OPEN_FI_PERFORM_00001025_E, and set the original values the fields have before the substitution as per note 530655.

Could, please, anyone help me to carrying out this requirement?

Many thanks in advance.

Regards,

M.