How To Fix RSM1478 - Unidentified error occurred when creating a new session

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM1 - Messages for AWB, Scheduler and Monitor (new)

• Message number: 478

• Message text: Unidentified error occurred when creating a new session

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.

Unfortunately, there isn't any extra information in this error notice.

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Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSM1478 - Unidentified error occurred when creating a new session ?

  The SAP error message RSM1478, which states "Unidentified error occurred when creating a new session," typically indicates that there is an issue with the SAP system's ability to create a new session for a user. This can be caused by various factors, and here are some common causes, potential solutions, and related information:
  Causes:
  
  System Resource Limitations: The SAP system may have reached its limit for active sessions or user connections.
  Authorization Issues: The user may not have the necessary authorizations to create a new session.
  Configuration Issues: There may be misconfigurations in the SAP system settings related to session management.
  Network Issues: Problems with the network connection between the client and the SAP server can lead to session creation failures.
  SAP Kernel Issues: Bugs or issues in the SAP kernel or application server can also lead to this error.
  
  Solutions:
  
  Check User Sessions: Verify if the user has reached the maximum number of allowed sessions. You can check this in transaction code SM04 (User Overview) or AL08 (Global User Overview).
  Increase Session Limits: If the system is reaching its session limits, consider increasing the maximum number of sessions allowed in the system profile parameters (e.g., rdisp/max_user_sess).
  Review Authorizations: Ensure that the user has the necessary authorizations to create a new session. This can be checked in transaction SU01 (User Maintenance).
  Check System Logs: Review the system logs (transaction SM21) for any related error messages that might provide more context on the issue.
  Network Troubleshooting: Ensure that there are no network issues affecting connectivity to the SAP server. Check for firewalls, VPNs, or other network configurations that might be causing problems.
  Restart SAP Services: If the issue persists, consider restarting the SAP application server or the entire SAP system, as this can sometimes resolve transient issues.
  Kernel Upgrade: If the error is due to a bug in the SAP kernel, check for any available patches or updates from SAP and apply them.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  System Monitoring: Use transaction ST22 (Dump Analysis) to check for any short dumps that might be related to the session creation error.
  
  If the problem persists after trying the above solutions, it may be necessary to contact SAP support for further assistance.