How To Fix RA149 - Node selections (MTE) cannot be determined

SAP Error Message - Details

• Message type: E = Error

• Message class: RA - Monitoring structure dialog message

• Message number: 149

• Message text: Node selections (MTE) cannot be determined

What causes this issue?

Internal error in the monitoring architecture.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Contact SAP AG.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RA149 - Node selections (MTE) cannot be determined ?

  The SAP error message RA149, which states "Node selections (MTE) cannot be determined," typically occurs in the context of SAP's monitoring and alerting infrastructure, particularly when dealing with the Management of Technical Events (MTEs) in the SAP Solution Manager or other monitoring tools.
  Cause:
  The error can arise due to several reasons, including:
  
  Configuration Issues: The MTEs may not be properly configured, leading to an inability to determine the node selections.
  Missing Authorizations: The user may lack the necessary authorizations to access the MTEs or the relevant nodes.
  Technical Problems: There may be underlying technical issues, such as problems with the database or the application server.
  Incorrect Node Selection: The node selection criteria may be incorrectly defined or not applicable to the current context.
  System Performance: High system load or performance issues may prevent the system from processing the MTEs correctly.
  
  Solution:
  To resolve the RA149 error, you can take the following steps:
  
  
  Check Configuration:
  
  Review the configuration settings for the MTEs in the SAP Solution Manager or the relevant monitoring tool.
  Ensure that the node selections are correctly defined and applicable.
  
  
  
  Verify Authorizations:
  
  Ensure that the user encountering the error has the necessary authorizations to access the MTEs and the nodes.
  Check the roles and profiles assigned to the user.
  
  
  
  Review System Logs:
  
  Check the system logs (transaction SM21) for any related error messages or warnings that could provide more context about the issue.
  Look for any dumps in transaction ST22 that might indicate underlying problems.
  
  
  
  Check System Performance:
  
  Monitor system performance to ensure that it is not overloaded. Use transaction ST03N to analyze workload and performance metrics.
  If the system is under heavy load, consider optimizing performance or scheduling monitoring tasks during off-peak hours.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide patches and updates.
  
  
  
  Restart Services:
  
  In some cases, restarting the relevant services or the entire system may help resolve transient issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM21 (System Log), ST22 (Dump Analysis), and ST03N (Workload Analysis).
  Documentation: Review SAP documentation related to MTEs and monitoring configurations for best practices and troubleshooting tips.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to diagnose and resolve the RA149 error effectively.