user exit for incoming PO - (PO is created by CIFing TLB order to R/3)

Hi All,

I need to find out the APO INBOUND user exit for reciving the PO information from the connected R/3 system. Initially a TLB order is created in APO and CIFed to APO and after the PO is created in connected R/3 system this PO number and related information is CIFed back to APO and this TLB order is replaced by the R/3 PO number.

Please help me outto gain full points.

Thanks in Advance,

Chandan Dubey