SAP Note 21458 - Syslog message during synchronous matchcode maintenance

Symptom:

The following message appears in the syslog:

"Tuple in the MC table M_ is not available for anUPD operation" (syslog number = B6A)
"Tupel in the MC table M_ already exists for an
INS operation" (syslog number = B6A)

Cause and prerequisites

Synchronous matchcode maintenance was turned off temporarily (for example, during the language import), whereby an inconsistency occurred between the basis table and the matchcode table.

Solution
The matchcode ID that was entered in the syslog message must be set up again using the SAPMACO utility.