There are no active matchcode objects for search pattern &

What causes this issue?

In your selection of matchcode objects to be maintained, you defined a
LIKE pattern usually used to select several matchcode objects to be
maintained. No active matchcode object exists for the LIKE pattern
which you selected.

System Response

The system cancels maintenance.

How to fix this error?

Check whether the matchcode objects to be maintained are active. If so,
you specified the LIKE pattern incorrectly. You can display the online
documentation by pressing the F1 function key in order to obtain
information about the LIKE pattern.

Error message extract from SAP system. Copyright SAP SE.