I ran ZDC on ZCM 11 primary servers and the tool reported this database error :

Severity Description
ERROR Mismatch in table 'ACLAddress' structure.
Object type: [Column] , Object name: [IP_MAC_Address]
Expected: [Name: IP_MAC_Address, Size: 18, Type: VARCHAR, Nullable: true]
Found: [Name: IP_MAC_Address, Size: 18, Type: VARCHAR, Nullable: false]


Do I have to manually correct this value?

Thanks!