Hi,
For already issued materials, you cant do anything, as of my knowledge.
For FIFO valuation for MAP materials, you have to activate the LIFO / FIFO indicator in the path: OLMW - Balance sheet valuation Procedure - Configure LIFO / FIFO methods - General Info - Activate / Deactivate LIFO / FIFO valuation.
For the complete procedure, you may refer the document: http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/c0768455-5dbe-2d10-40af-b83491da9d17?overridelayout=t…
Regards,
AKPT
