Material & was replaced by material &

What causes this issue?

In the user exit PPCO0007 the material number &V1& specified by the
user is replaced by the material number &V2&. This can have been done
for example by an attached standard-material database.

System Response

The material number &V2& is copied as a new component to the order.

How to fix this error?

If this swap is not correct at this point contact your system
administrator so that the reasons for the change can be ascertained.

Procedure for System Administrators

Find out why the component &V1& was replaced by &V2& in the user exit
PPCO0007 and adjust the logic as appropriate.

Error message extract from SAP system. Copyright SAP SE.