How To Fix RT304 - TID of MTE &1 has become invalid; TID has been assigned to the new MTE &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RT - Monitoring infrastructure MSG and alert texts

• Message number: 304

• Message text: TID of MTE &1 has become invalid; TID has been assigned to the new MTE &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RT304 - TID of MTE &1 has become invalid; TID has been assigned to the new MTE &2 ?

  The SAP error message RT304 indicates that a Monitoring Tree Element (MTE) has become invalid because its Technical ID (TID) has been reassigned to a new MTE. This typically occurs in the context of SAP Solution Manager or other monitoring tools that utilize MTEs to track system performance and health.
  Cause:
  
  Reassignment of TID: The TID of an MTE is unique and is used to identify it within the monitoring framework. If an MTE is deleted or becomes invalid, its TID may be reassigned to a new MTE, leading to this error.
  Configuration Changes: Changes in the configuration of monitoring settings or the underlying system can lead to the invalidation of existing MTEs.
  System Updates: Upgrades or patches applied to the SAP system can sometimes result in changes to MTEs and their TIDs.
  
  Solution:
  
  Check MTE Status: Use transaction codes like RZ20 or RZ21 to check the status of the MTEs. Identify the MTE that has become invalid and the new MTE that has been assigned the TID.
  Reconfigure Monitoring: If necessary, reconfigure the monitoring settings to ensure that the new MTE is correctly set up and that the old MTE is no longer referenced.
  Delete Invalid MTE: If the old MTE is no longer needed, you may consider deleting it from the monitoring configuration to avoid confusion.
  Update Monitoring Templates: If you are using monitoring templates, ensure that they are updated to reflect the changes in MTEs.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific issue or provide additional guidance.
  
  Related Information:
  
  Monitoring Tree Elements (MTEs): MTEs are used in SAP to represent various monitoring objects, such as systems, instances, or specific metrics.
  Transaction Codes: Familiarize yourself with transaction codes like RZ20 (CCMS Monitoring) and RZ21 (CCMS Monitoring Configuration) for managing MTEs.
  SAP Solution Manager: If you are using SAP Solution Manager, ensure that your monitoring setup is correctly configured and that you are following best practices for monitoring and alerting.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.