These topics help resolve issues with setting up and confiiguring the connectors.
The allowedResourceDomains pattern does not seem to be valid Problems Encountered When Saving the General Settings Could Not Read the General Settings Connector and 3DSearch URLs Contain Mismatching Domains Connector URL is Accessible, but Cannot be Confirmed to be a Valid Connector Connector URL is Accessible and Valid, but Does Not Match the Connector Being Configured 3DPassport URL Cannot be Accessed 3DSearch URL Cannot be Accessed 3DSearch URL Is Accessible, but Relates to a Different 3DPassport URL 3DSearch URL is Accessible, but Cannot be Confirmed to be a 3DPassport-enabled Server 3DPassport or 3DSearch URL Cannot be Accessed, SSL/TLS Error Unable to Access Connector URL Undefined Repository Version Type