/mcpCredentials configured in the End User Configuration page in Unified CM Administration. 11 InvalidX509NameInCertificate - The configured X.509 Subject Name doesn't match the information in the certificate from the device. Check the Security profile of the indicated device and verify that the Device Security Mode is set to either Authenticated or Encrypted. Verify that the X.509 Subject Name field has the appropriate information. It should match the Subject Name in the certificate from the peer. 12 InvalidTLSCipher - An unsupported cipher algorithm was used by the device; Unified CM only supports AES_128_SHA cipher algorithm. Recommended action is for the device to regenerate its certificate with the AES_128_SHA cipher algorithm. 14 MalformedRegisterMsg - (SIP only) A SIP REGISTER message could not be processed because of an illegal format. Possible causes include a missing Call-ID header, a missing AoR in the To header, or an expires value that is too small. Check the REGISTER message for any of these issues and if you find one, correct the issue. 15 ProtocolMismatch - The protocol of the device (SIP or SCCP) does not match the configured protocol in Unified CM. Recommended actions: 1) Verify that the device is configured with the desired protocol; 2) Verify that the firmware load ID on the Device 5/24/26, 3:34 AM System Error Messages for Cisco Unified Communications Manager 15 - Cisco https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/err_msgs/15_x/ccmalarms15.html 176/343