PRD Error while doing GRN

[Former Member]

Purchase Order Has been created on 20.12.2007. For one line item GRN(20.02.2008) has been made for part quantity ans invoice has beeb made for the same (28.02.2008).When they tried to make GRN for other part quantity for the same on 13.03.2008. it is asking for PRD key for the Valuation class.

But o 29.02.2008 they have done Costing run and updated Material ,Master for both standard price as wel as moving average price .

My query is, why it is asking PRD key while donig GRN.Though we have done price changes in master at the end of the month(after costing run) why it is affecting my GRN.Because GRN is based on moving average price,changes should not affect .

Pls clarify

[Former Member]

If there is price difference then PRD will trigger

[Former Member]

Where can be the difference, it is not definitely changed in PO (line item changes are nil) and not in the earlier invoice made for the same part quantity earlier. only change has been made on 29th of Feb due to costing run and recalculated moving avaerage price has been updated

[Former Member]

Normally product costing will be done for Standard price..

[Former Member]

Yes we are doing the same But here after costing run ,We recalculate the moving average price with Standard price(for semefinished) ,manufacture stock, procured stock ,total stock value divide by toatl stock

This is client specfic.At this updation only price has changed in master.

[Former Member]

Pls check earlier GRN is it on MAV or Standard price