PO condition error in BAPI_PO_CREATE1

Hi

I tried couple of approaches to insert a 'Z' condition record via bespoke program for creating PO but couldn't get through.

My mapping for condition interface parameter is:

  CLEAR: pocond, pocondx.

  pocond-itm_number   = w_item.

  pocond-cond_st_no   = '001'.

  pocond-cond_type    = 'ZFM1'.

  pocond-cond_value   = wa-val

  pocond-currency     = 'GBP'.

  pocond-currency_iso = 'GBP'.

  pocond-cond_unit    = 'EA'.

  pocond-cond_p_unt   = '1'.

  pocond-change_id    = 'I'.

  pocondx-itm_number  =  w_item.

  pocondx-cond_st_no  =  '001'.

  pocondx-itm_numberx =  'X'.

  pocondx-cond_st_nox =  '001'.

  pocondx-cond_type   =  'X'.

  pocondx-cond_value  =  'X'.

  pocondx-currency    =  'X'.

  pocondx-change_id   =  'X'.

  APPEND: pocond, pocondx.

All i get is the error "No conditions determined (no authorization for input)". I'm sure this is not a authorization issue as I've SAP_ALL access and also checked SU53. Pls can any help be provided?

Note: I did try with parameter id EFB set in my user profile but still no luck.