Error constructing the matchcode records for matchcode ID &-&

What causes this issue?

An error occurred when the matchcode records were constructed for the
specified matchcode ID.

System Response

The system continues work after this error message.

How to fix this error?

Check the conversion log for any comments about the error. If you did
not get any error comments, try to construct the matchcode records
with the SAPMACO program.
Correct any errors which occurred and repeat the matchcode record
construction with SAPMACO.

Error message extract from SAP system. Copyright SAP SE.