Diagnosis
A purchase order is to be generated for a material in inboundprocessing of IDoc ORDRSP. The relevant MRP type does not, however,allow purchase orders to be entered by the vendor.

System Response
IDoc inbound processing terminated.

Procedure
Configure the MRP type for the relevantcombination of material and plant properly. The MRP type must have thefollowing characteristics:
Characteristic,, Value ,, Meaning
MRP procedure,, "W",, Replenishment
Planning method,, "1",, planned by externalsystem