Price change more than & % in previous year for material &

IF &V4& NE ''.
DEFINE &A& = 'Valuation type:'.
ENDIF.

What causes this issue?

When you post the document, a posting is made to the stock account. This
results in a large price variance in the previous year.

How to fix this error?

Check the amounts and quantities in the material item and correct them
if necessary.
Material: &V2&
Valuation area: &V3&
&A& &V4&

Error message extract from SAP system. Copyright SAP SE.