Update FMIFIIT-OBJNRZ After Posting

Hi,

I've implemented the BADI "SMOD_SAPLFMRI" to integrate FI-CO with FM tables usign the note 1506937, but i have a problem to update OBJNRZ in documents that were posted before the implementation.

I tried to run FMN0 but the transaction gave me the message code FMUP128 "Document not updated as it already exists or is not relevant for FM".

This is the code that i use in the method EXIT_SAPLFMRI_001 to get OBJNR.

IF SY-TCODE = 'FMN0'.     SELECT SINGLE OBJNR FROM CSKS       INTO C_DEFAULT_OBJNRZ      WHERE KOSTL = I_F_ACCIT-KOSTL AND KOKRS = I_F_ACCIT-BUKRS
ENDIF.

How could i fix that?

Regards.

Francisco.