VA01- change item Material Pricing Group depending of Price List

Question

Hi all,
  I have this requirement:
Transaction VA01, VA02 (create, change sales order)
If the user modify the Price List in header data I must change the Material Pricing Group (VBAP-KONDM) for ALL the items in the document.
I've tried to implement the exit MV45AFZZ to obtain this goal, but it works fine only for the new item inserted or changed while for the unchanged item the
Material Pricing Group has not been modified.
Does anybody knows what enhancement I have to use?
I thank you in advance.
                                                              Paolo

Answer 1

Include: MV45AFZZ
form: userexit_field_modification.
This is to show the new assigned value
if sy-tcode eq 'VA01' or sy-tcode eq 'VA02'.
  if not vbap-kondm is initial and
    vbkd-pltyp = '02'.
    if vbap-spart = 'CA'.
      vbap-kondm  = '91'.
    else.
      vbap-kondm  = '90'.
    endif.
  endif.
endif.
Include: MV45AFZZ
form userexit_save_document_prepare.
This is to store the value assigned
if sy-ucomm eq 'SICH'.    " Save
  loop at xvbap.
    if not xvbap-kondm is initial.
      if xvbap-spart = 'CA'. 
        xvbap-kondm  = '91'.
      else.
        xvbap-kondm  = '90'.
      endif.
      if xvbap-updkz is initial.
        xvbap-updkz = 'U'.
      endif.
      modify xvbap index sy-tabix.
    endif.
  endloop.
endif.