I have ZCM 10.3.1 and I'm was going to upgrade to ZCM 11. I read the instructions that you have to "ensure that the database schema is proper by using the Zenworks Diagnostic Center tool", I did that and get error:

[ERROR] [DBObjectComparer] Index 'idx_NDAlert_OID' is missing!!!
[ERROR] [DBObjectComparer] Additional Index 'idx_NC_Networ_NetworkDeviceOID' found!!!
[ERROR] [TableHelper]
[!] 1 errors found while verifying Indexes of Table NC_NetworkPrinter_Alert

Does anywone have a tips to give me what to do?