Errors were written to the SQL Translation Log while converting the MAS_XXX data to SQL

SUGGESTED

Good morning.  During the refresh of an upgrade from 2017 Standard to 2018 Premium, the system activity log shows the following messages for each company that was converted.

XXX Company data conversion to version 06.00.00.00 started

XXX Company data conversion to version 6.00 completed

Errors were written to the SQL Translation Log while converting the MAS_XXX data to SQL

Also the SQL transaction log shows the following error for each company that was converted

01/04/2019 22:29:51,Logon,Unknown,Error: 18456<c/> Severity: 14<c/> State: 38.

01/04/2019 22:29:51,Logon,Unknown,Login failed for user 'MAS_User'. Reason: Failed to open the explicitly specified database 'MAS_XXX'. [CLIENT: <local machine>]

Note, MAS_User is properly showing as owner for all the MAS databases.

Has anyone experienced similar errors in a migration?

Where can these Translation logs be located and accessed or queried?

Thanks in advance.

Mike