How To Fix DNO231 - Error during log-on to SAP. Partner &1 is not permitted

SAP Error Message - Details

• Message type: E = Error

• Message class: DNO - Messages for General Notifications

• Message number: 231

• Message text: Error during log-on to SAP. Partner &1 is not permitted

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DNO231 - Error during log-on to SAP. Partner &1 is not permitted ?

  The SAP error message DNO231, which states "Error during log-on to SAP. Partner &1 is not permitted," typically indicates that there is an issue with the communication between the SAP system and the partner system (which could be another SAP system or an external system). This error often arises in scenarios involving RFC (Remote Function Call) connections or when trying to log on to a system that is not authorized for the user or partner.
  Causes:
  
  Authorization Issues: The user or partner system does not have the necessary authorizations to log on to the SAP system.
  Incorrect Partner Configuration: The partner system may not be correctly configured in the SAP system, leading to communication issues.
  Network Issues: There may be network connectivity problems between the SAP systems.
  Incorrect Logon Credentials: The credentials being used to log on may be incorrect or not valid for the partner system.
  System Settings: The system settings may not allow connections from the specified partner.
  
  Solutions:
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to access the SAP system. This can be done by checking the user roles and profiles in transaction SU01 or PFCG.
  
  
  
  Verify Partner Configuration:
  
  Check the configuration of the partner system in transaction SM59 (RFC Destinations). Ensure that the destination is correctly set up and that the connection type is appropriate.
  
  
  
  Test Connection:
  
  Use the "Test Connection" feature in transaction SM59 to verify that the connection to the partner system is working correctly.
  
  
  
  Check Logon Credentials:
  
  Ensure that the correct user ID and password are being used for the logon. If necessary, reset the password.
  
  
  
  Review Network Settings:
  
  Check for any network issues that may be preventing communication between the systems. This may involve checking firewalls, VPNs, or other network configurations.
  
  
  
  System Parameters:
  
  Review the system parameters related to logon and communication settings. Ensure that the system is configured to allow connections from the specified partner.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SM59: Manage RFC Destinations
  SU01: User Maintenance
  PFCG: Role Maintenance
  
  
  SAP Documentation: Refer to the official SAP documentation for more detailed information on user authorizations and RFC configuration.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.