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Moving average price for material is negative: M8 783 while credit memo/MR8M


We receive an error message :M8 783- "Moving average price for material is negative". This is while we do a credit memo or MR8M.

This is the screens shot of MB51:

Below is the PO history for the material in question:


While cancelling the IR above, the error message apperas as "Moving average price for material in plant is negative".

Not really clear how this situation should be handled.

The MAP of this material has not changed.. Its 500$.

Read the oss notes as well, but would like to get some response from the forum to proceed.



Former Member

you have to make the value of the stock bigger than your credit posting.

this is usually done by changing the moving average through MR21 transaction.

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