PO item partial GR caused commitment issue

Question

hi,
we have a probem caused by the PO item partially GR. I would like to distingish the GR for a PO item whether is a partially or fully. We have a customize report for generating the commitment and send to other sysem. 
the problem here Say,
one po Item with 1000 , then do partially GR witth 100, so the commitment about should be 900. But currently the logic doesn't works. It considers that the commitment amout is 0.  Appreciate your voices, any good way to pick the 900 up.
thanks in advance

Answer 1

HI..
PO item wise value can be picked from EKPO,where as the partial GR for that particular PO (EBELN) and for that item(EBELP)can be derived from EKBE table where the movement type is '101' or purchase history category'E' then pick the value EKBE-WRBTR(doc.currency) and for PO item value try to get the value from net value or gross value it all depends on the requirement.
Commited = EKPO-Gross/net value( for that item,EBELP) - EKBE-WRBTR.