Linux server discovery fails due to unrecognized configuration types Issue <!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #6e9db4; } a:visited { font-size: 12pt; color: #7057C7; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: 500px !important; width: auto; height: auto; } } When trying to discover a Linux server, the process fails on the step Ref/Rel Linux Serial: Relation or reference table cmdb_ci_linux_server citing an unknown configuration item (CI) type. Check the discovery logs for more details. When debugging with mid.log.level set to debug, MID Server produces logs like the following: Worker-Interactive:PatternDebuggerProbe-b3d3fd161b2f9090a436bbb1cd4bcb3d (27)DebuggerPatternExecutor - Starting step: [name='Ref/Rel Linux Serial', functor=MergeTableReferenceAndRelationClosure:REFERENCE_AND_RELATION:cb5984e4-08fb-42d8-a04e-fc28e2d99c4e] Worker-Interactive:PatternDebuggerProbe-b3d3fd161b2f9090a436bbb1cd4bcb3d SEVERE *** ERROR *** (27)MergeTableReferenceAndRelationClosure - Relation and/or reference table cmdb_ci_linux_server is not a known CI Type. Check the discovery logs for more details. Worker-Interactive:PatternDebuggerProbe-b3d3fd161b2f9090a436bbb1cd4bcb3d (27)DebuggerPatternExecutor - Finished Step [name='Ref/Rel Linux Serial', functor=MergeTableReferenceAndRelationClosure:REFERENCE_AND_RELATION:cb5984e4-08fb-42d8-a04e-fc28e2d99c4e] with status [{type = FAILURE, cause = com.snc.sw.exception.ConfigurationException: Relation and/or reference table cmdb_ci_linux_server is not a known CI Type. Check the discovery logs for more details.}] execution took 0 ms Worker-Interactive:PatternDebuggerProbe-b3d3fd161b2f9090a436bbb1cd4bcb3d DEBUG: (27)PatternDebuggerProbe - ==== Debugger step execution failed: Relation and/or reference table cmdb_ci_linux_server is not a known CI Type. Check the discovery logs for more details. The pattern and step exist, but when testing the step in pattern debug, it produces the same error. Release<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #6e9db4; } a:visited { font-size: 12pt; color: #7057C7; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: 500px !important; width: auto; height: auto; } } Any Cause<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #6e9db4; } a:visited { font-size: 12pt; color: #7057C7; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: 500px !important; width: auto; height: auto; } } The pattern may not be in sync with MID Server. Resolution<!-- /*NS Branding Styles*/ --> .ns-kb-css-body-editor-container { p { font-size: 12pt; font-family: Lato; color: #000000; } span { font-size: 12pt; font-family: Lato; color: #000000; } h2 { font-size: 24pt; font-family: Lato; color: black; } h3 { font-size: 18pt; font-family: Lato; color: black; } h4 { font-size: 14pt; font-family: Lato; color: black; } a { font-size: 12pt; font-family: Lato; color: #00718F; } a:hover { font-size: 12pt; color: #024F69; } a:target { font-size: 12pt; color: #6e9db4; } a:visited { font-size: 12pt; color: #7057C7; } ul { font-size: 12pt; font-family: Lato; } li { font-size: 12pt; font-family: Lato; } img { display: block; max-width: 500px !important; width: auto; height: auto; } } Sync the patterns with the MIDs by going to the MID Server table and selecting Pattern Sync to MID.