Using BAPI_PR_CREATE , but failed to overwrite the item short text

Question

As I want to create PR items and rewrite the items' short text,
even if i have give the short_text some  values ,
but it still to be the default value after the PR items created.
The following is main part of my program using BAPI  'BAPI_PR_CREATE' to create PR:
     w_pritem-material = t_in-matnr.
      perform frm_add_zero using w_pritem-material.
     W_PRITEM-PREQ_ITEM = SY-TABIX.
      w_pritem-preq_item = l_tabix.
      perform frm_add_zero using w_pritem-preq_item.
      w_pritem-acctasscat = t_in-knttp.
      w_pritem-plant = t_in-werks.
     W_PRITEM-STORE_LOC = '1003'.
      w_pritem-quantity = t_in-menge.
      w_pritem-SHORT_TEXT = t_in-txz01.
      append w_pritem to t_pritem.
      w_pritemx-preq_item = w_pritem-preq_item.
      w_pritemx-material = 'X'.
      w_pritemx-preq_itemx = 'X'.
      w_pritemx-acctasscat = 'X'.
      w_pritemx-plant = 'X'.
     W_PRITEMX-STORE_LOC = 'X'.
      w_pritemx-quantity = 'X'.
        w_pritemx-SHORT_TEXT = 'X'.
      append w_pritemx to t_pritemx.
    call function 'BAPI_PR_CREATE'
        exporting
            prheader = w_prhead
            prheaderx = w_prheadx
        importing
            number =  l_prnum
        tables
            return =  t_return
            pritem =  t_pritem
            pritemx = t_pritemx
            praccount = t_praccount
            praccountx = t_praccountx
            pritemtext = t_pritemtext
Ivan Yang

Answer 1

Now I try to use 'BAPI_REQUISITION_CREATE'  to instead of 'BAPI_PR_CREATE'.
But it still fail , it always give a error message like that 'No direct postings can be made to G/L acct.'.
Pls note that the ACCTASSCAT is setted to be 'M' , and I am sure that all the data entries can generate a PR without problem
while using 'BAPI_PR_CREATE'.
Following is the main part of my program:
PR_ITEM-DOC_TYPE   = T_in-BSART.
PR_ITEM-PREQ_ITEM  = l_tabix.
perform frm_add_zero using PR_ITEM-PREQ_ITEM.
  PR_ITEM-ACCTASSCAT = 'M' .
PR_ITEM-MATERIAL = t_in-MATNR.
  perform frm_add_zero using PR_ITEM-MATERIAL.
      if t_in-txz01 is not initial.
        PR_ITEM-SHORT_TEXT = t_in-txz01.
      endif.
    PR_ITEM-QUANTITY  = T_IN-MENGE.
    PR_ITEM-DELIV_DATE = '20090801'. 
    PR_ITEM-PLANT  = T_IN-WERKS.
    PR_ITEM-PREQ_DATE = '20090801'.
    APPEND PR_ITEM.
    PR_ACCOUNT-PREQ_ITEM = PR_ITEM-PREQ_ITEM.
    PR_ACCOUNT-G_L_ACCT = T_IN-SAKNR.  
    PR_ACCOUNT-SERIAL_NO = 1.
     PR_ACCOUNT-CO_AREA =  'XXX'.
      PR_ACCOUNT-PREQ_QTY = t_in-MENGE.
      PR_ACCOUNT-sd_doc = t_in-vbeln.
      perform frm_add_zero using PR_ACCOUNT-sd_doc.
      PR_ACCOUNT-SDOC_ITEM = t_in-posnr.
      perform frm_add_zero using PR_ACCOUNT-SDOC_ITEM.
    APPEND PR_ACCOUNT.
    CLEAR PR_ACCOUNT.
     CLEAR PR_ITEM.
CALL FUNCTION 'BAPI_REQUISITION_CREATE'
EXPORTING
  SKIP_ITEMS_WITH_ERROR                =
  AUTOMATIC_SOURCE                     = 'X'
       IMPORTING
         NUMBER                               = l_prnum
        TABLES
          REQUISITION_ITEMS                    = PR_ITEM
          REQUISITION_ACCOUNT_ASSIGNMENT       = PR_ACCOUNT
          RETURN                               = PR_RETURN
Ivan Yang