SAP Message 06631 - Purchase requisition &1, item &2, has different batch &3

Diagnosis
You wish to create a further delivery schedule line referencingrequisition no. &V1& for a purchase order item to which abatch has already beenassigned.
The batch in the requisition you wish to convert into a schedule linediffers from the batch in the PO item.

System Response

Procedure
Terminate the schedule line creation process and convert therequisition into a new PO item.