How to raise PO while creating GR

Question

hi gurus,
here the scenario is that to raise the purchase order while posting goods receipt. its not that taking reference purchase order for goods reciept. but PO has to be created while we are posting GR.
please help me..

Answer 1

In configuration (transaction SPRO) see set up under:
MM \ IM and PI \ GR \ Create PO automatically.
In this step, you define for each movement type whether a purchase order is automatically created when a goods receipt is posted.
When it is, the user can enter a goods movement without entering the purchase order number, using the Goods receipt for purchase order function. The system valuates the goods receipt at the price defined in the purchasing info record.
Requirements
In Customizing for organizational structure, the plant must be assigned a purchasing organization in the step Standard purchasing organization - assign plant so that the system can determine the purchasing info records.
Activities
Maintain the indicator for the required movement types. You can only use the movement types that are used for entering goods receipts for purchase orders: Movement types 101 and 161).
Movements to GR blocked stock are not possible using this function.
Regards,
Nick