It is showing as error *Instance of object type PO could not be changed*
i have requirement in PO Change IDOC , i have tested this IDOC .. but it is showing in Status record as error Document is does not exist
and in Segmentheader for E1BPMEPOHEADER ..it is showing as error Instance of object type PO could not be changed
SEGMENT NAME : E1BPMEPOHEADER
we have entered related entries in it ...
am uanble to find out where is porblem lies in it... plz help ASAP ...
Thanks in advance..