Price will change by & & in month &/&

What causes this issue?

Due to action taken, the quantity and value of the material are
changed. This leads to calculation of a new moving average price: The
ne price deviates from the old one by &V1& &V2&.

How to fix this error?

Before you carry out the posting, you should find out the reason for
this difference.
If required, check the material line items to determine which postings
have led to the current moving average price. If the action taken
refers to a purchase order, you could contact Purchasing to find out
whether a mistake was made when entering the order price. <ZV>Copied
from M7306. Variables &V2& included</>

Error message extract from SAP system. Copyright SAP SE.