3419828 - "Content repository <repository name> does not exist" error  in t-code OAC0 when use SAP Document Management repository

• When click "Check" button in t-code OAC0 for repository onboarded via SAP Document Management Integration Option, it ends with error:
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  Content repository <repository name> does not exist 
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• When click "Send RFC info" button, it popup asking for logon data. If click Cancel button, it shows message:
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  SSL client SSL Client (Standard)
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• When simulate above 2 symptoms and collect ICM level 2 log, could see following log in dev_icm log file:
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  [Thr 139912231626496] HTTP request (raw) [<xxx>/<xxxxx>/<x>]:
  [Thr 139912231626496]   PUT /browser?&contRep=<repository id>&cmisaction=putCert&authId=CN%3d<SID>&expiration=<time>&secKey=MIIDUgYJKoZIhvc...
  ...
  [Thr 139912231626496]   host: api-sdm-di.cfapps.<region>.hana.ondemand.com
  ...
  [Thr 139912231626496] HTTP response (raw) [<xxx>/<xxxxx>/<x>]:
  [Thr 139912231626496]   HTTP/1.1 401 Unauthorized
  ...
  [Thr 139912231626496]   x-vcap-request-id: <xx-xx-xx-xx>
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• When SAP Support use the x-vcap-request-id to check internally, could see following log:
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  javax.security.sasl.AuthenticationException: unknown consumerInfo
  ...
  com.sap.xs.audit.api.exception.AuditLogWriteException: Problem occurred while trying to obtain token
  ...
  Caused by: com.sap.cloud.security.xsuaa.tokenflows.TokenFlowException: Error requesting technical user token with grant_type 'client_credentials': Error retrieving JWT token. Server URI https://null.authentication.cert.<region>.hana.ondemand.com/oauth/token. Http status code 404. Response body '{}'
  ...
  Caused by: com.sap.cloud.security.xsuaa.client.OAuth2ServiceException: Error retrieving JWT token. Server URI https://null.authentication.cert.<region>.hana.ondemand.com/oauth/token. Http status code 404. Response body '{}'
  ...
  ------------
  
  
• When do connection test for destination maintained in t-code SM59, the connection test ends with error such as:
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  SSL handshake with api-sdm-di.cfapps.<region>.hana.ondemand.com:443 failed: SSSLERR_PEER_CERT_UNTRUSTED (-102)
  Peer's X.509 certificate (chain) validation failed (missing trust?)##SapSSLSessionStartNB()==SSSLERR_PEER_CERT_UNTRUSTED#  
  SSL:SSL_read() failed...Failed to verify...
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  or
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  Create failed
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Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental." 

• SAP Document Management Service Integration Option

dms, sdm, btp dms, btp sdm, SSL handshake with, SSSLERR_PEER_CERT_UNTRUSTED,  , KBA , BC-CP-CF-SDM-INT , Document Management, integration option , CA-DMS , Document management , BC-SRV-MCM-ABA , Mobile Documents - ABAP CMIS SDK , BC-SRV-MCM-SER , Server, Web App, AdminUI , BC-SRV-MCM-APP , Mobile Documents - Native Apps , Problem