Function IS-Media

Hi frieds...

I am trying to use an IS-MIDIA Function to modify the adress for an unlimited change in an order, but i am getting error nº '028' with ID 'JK'. Anyone could help me? I had already changed the order with the same address in standard ( transaction JK02 ) and it work.

CALL FUNCTION 'ISM_SALES_ORDER_CHANGE'

           EXPORTING

             vbeln                           = <fs_jkap>-vbeln

             posex                         = <fs_jkap>-posex

             posnr                          = <fs_jkap>-posnr

             funktion                      = '10'

             xmessaging                = abap_on

             xtest                          = abap_off

             jksi_address               = ls_jksi_address

             jksi_unbefr_aender      = ls_jksi_unbefr_aender

           EXCEPTIONS

             wrong_data         = 1

             error                   = 2

             OTHERS            = 3.

I use the same function to make a temporary change of an address using  funktion = '07' and it works.

Thanks,

GLippmann