How to update trading partner (BSEG-VBUND) in tr.code FB01/FB02?

Question

Hi,
I need, under some circumstances, to update value of trading partner code (field BSEG-VBUND) to all items in the FI document, created/changed with transaction FB01/FB02.
I checked available user exits and bussiness events, but didn't found one, which could do the trick.
In fact, in bussiness transaction event #00001430 (CHANGE DOCUMENT: Field substitution header/line - Checks prior to posting change completed) - for FB02 I have access to the internal table T_BSEG, but it seems this table is used as import parameter only and any changes didn't take efect at the end.
Any help how can I do the trick? And this is while I'm in a transaction FB01/FB02.
My system is 4.6c.
Many thanks in advance.
Regards,
Ivaylo Mutafchiev

Answer 1

Svetlin, Max,
what I did until now is:
1) followed matrix substitution = callup point 3 (complete document) - I checked for existance of correct substitution field(s) in the GB01 table, and re-generated substitution code (as noticed in note 42615). That added my field in the list of fields for substtitution which are considered at the end of substtitution - in forms:
FORM EXP_REC_015                      
        USING                        
          DATA_CHANGED TYPE GB002_015
        CHANGING                     
          DATA_OUT TYPE GB002_015.
and
FORM EXP_TAB_015_BSEG                   
         USING                          
           IN_ORIG STRUCTURE        BSEG
        CHANGING                        
           OUT_RESULT STRUCTURE     BSEG
           B_RESULT.
both forms are in main generated program GBTAAFI0.
My field (VBUND) is taken in account - added to the structure:
DATA:  BEGIN OF TEMP_STRUCT,                          
        VBUND                          LIKE   BSEG-VBUND
        ZFBDT                          LIKE   BSEG-ZFBDT
        END OF TEMP_STRUCT.                            
here ZFBDT was the other field defined in GB01 for substitution from someone esle - perhaps by default, I don't know.
Further (in the include MF05LFB0),
almost all of the structures which contain my changes are cleared (below is extract from the code):
LOOP AT beltab WHERE xarch NE char_x.                   "Note 0383125
REFRESH xbseg.                                                     
  REFRESH ybseg.                                                     
  REFRESH xbsec.                                                     
  REFRESH ybsec.                                                     
  REFRESH xbsed.                                                     
  REFRESH ybsed.                                                     
  REFRESH xbset.                                                     
  REFRESH ybset.                                                     
  REFRESH t_bsegco.                                                  
  REFRESH t_fmfich.                                                  
Further, the logic proceed with the program SAPFF011 and form 'import_*beleg', where my changes were overwritten with original data - before substitution.
2) Tried Max's proposal - and extended structure BSEG_SUBST with field VBUND, further populated the substitution table in the related BTE 1430 accordingly.
Unfortunately the flow-logic proceeded further to the same form 'import_*beleg' in the program SAPFF011 and my changes dissapeared.
I'm at dead-end - have no idea where and what is the problem...
Checked few OSS notes - 42615, 386896, 513891, 391309, 438076. Everything which is related to my exact situation is set correctly - as far as I found :-).
Just for tests I tried both ways (BTE and matrix substitution) with another field ==> BSEG-XREF3, and it was updated correctly - accorging to my logic.
Thanks guys, your suggestions were right at the time and valuable, but they didn't help me to solve my problem. Perhaps there is something messed in our system - I can't be sure. What I can say for sure is that we have working BTE-s (1430 is used in our system - I just added piece of code into it), and validations are working also.
Thanks again.
Regards,
Ivaylo
P.S. If you have any suggestions, I'll be glad to hear them from you.