Glossary of Key Terms
401 Unauthorized Failure message that can occur when the Cisco Expressway attempts to authenticate the credentials presented by the endpoint client. The reasons for this error may be due to the client supplying an unknown username or the wrong password. It could also be that the Intercluster Lookup Service (ILS) has not been set up on all of the Cisco Unified CM clusters.
403 Forbidden Error message that can occur for any service request. These services may fail if the Cisco Expressway-C and Cisco Expressway-E are not synchronized to a reliable NTP server. The services may also need to be added to the HTTP allow list.
404 Not Found Type of error that occurs when client HTTPS requests are dropped by the Cisco Expressway. ...
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