Not able to post GR - error message M7379

Question

while doing GR for a material I am getting the following error message.
Message No. 7379
The valuation type &V1& for material &V2& was already delivered in the last posting from vendor &V3&, according to the batch master record.However, a different vendor was entered in the purchase order.
Though in the previous PO the vendor was different but the valuation type in the same.
I am not able to trace the batch master record for the material.
Please suggest a solution.

Answer 1

when i try to see the batch record using msc3n it says that this material is not maintained in batches for this plant. I know the previous vendor as i have access to the previous PO. Also, the new valuation type and the valuation type according to the previous PO is the same. However the vendors are different.
Message M7379  gives this solution :
The vendor for the valuation type must be the same as the vendor in the purchase order.
If the vendor in the purchase order should actually deliver valuation V1, you can post the goods receipt as follows: cancel processing,change the vendor in the batch master record, and enter the goods receipt again.
If the vendor should deliver to a different valuation type, you should change the purchase order. Contact Purchasing.
I think solution 1 would work for me. And thats why i need to know how can i access the batch master record.
one more doubt- are batch records created automatically alongwith each PO?