Check before solving - There are existing compile diagnostics:
/LegacyApp/UserCreditService.cs(26,43): warning CS0169: The field 'UserCreditServiceClient._userCreditServiceChannelImplementation' is never used
/LegacyApp/UserDataAccess.cs(1,1): hidden CS8019: Unnecessary using directive.
Fixes #1.
Check before solving - There are existing compile diagnostics: