I have problem with update custom z-field by using BAPI_PO_CHANGE,
1) I added z-field to BAPI_TE_MEPOITEMX, BAPI_TE_MEPOITEM and BAPI_TE_MEPOHEADERX, BAPI_TE_MEPOHEADERstructure
2) I implemented code attached below:
3) BADIN Method IF_EX_ME_BAPI_PO_CREATE_02~MAP2I_EXTENSIONIN was implemented to map z-field
And still Po document cannot be changed with new values, have any idea why?