Matchcode ID &-& does not fit new matchcode object

What causes this issue?

There is an inconsistency between a matchcode ID and the corresponding
matchcode object.

System Response

There is a warning.

How to fix this error?

Try to activate the corresponding matchcode ID. Go to the matchcode ID
maintenance screen and press <LS>Activate</>. The activation log might
contain further information about the type of inconsistency which
occurred. You can display an activation log which already exists with
<LS>Display log -> Activate</> in the menu <LS>Utilities</>.

Error message extract from SAP system. Copyright SAP SE.