How To Fix LMON018 - Define both upper and lower threshold values

SAP Error Message - Details

• Message type: E = Error

• Message class: LMON - Monitor messages

• Message number: 018

• Message text: Define both upper and lower threshold values

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LMON018 - Define both upper and lower threshold values ?

  The SAP error message LMON018 indicates that there is a configuration issue related to the threshold values for monitoring in the Landscape Management Database (LMDB) or the Landscape Management Server (LMS). Specifically, this error occurs when both upper and lower threshold values are not defined for a particular monitoring parameter.
  Cause:
  The error arises when:
  
  You have not set both the upper and lower threshold values for a specific monitoring parameter in the system.
  The configuration for monitoring certain metrics is incomplete, leading to the system being unable to determine acceptable ranges for those metrics.
  
  Solution:
  To resolve the LMON018 error, you need to define both the upper and lower threshold values for the relevant monitoring parameters. Here are the steps to do this:
  
  
  Access the Monitoring Configuration:
  
  Go to the SAP GUI and navigate to the relevant transaction code for monitoring configuration (e.g., LMDB or LMS).
  
  
  
  Locate the Monitoring Parameter:
  
  Find the specific monitoring parameter that is causing the error. This may involve checking the configuration settings for the system landscape.
  
  
  
  Define Threshold Values:
  
  Set both the upper and lower threshold values for the parameter. Ensure that:
  
  The lower threshold is less than the upper threshold.
  The values are appropriate for the metrics being monitored.
  
  
  
  
  
  Save the Configuration:
  
  After entering the values, save the configuration changes.
  
  
  
  Restart Monitoring:
  
  If necessary, restart the monitoring service or refresh the monitoring dashboard to ensure that the changes take effect.
  
  
  
  Related Information:
  
  Documentation: Refer to the official SAP documentation for Landscape Management for detailed instructions on configuring monitoring parameters.
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or updates related to this error.
  Support: If the issue persists after following the above steps, consider reaching out to SAP support for further assistance.
  
  By ensuring that both upper and lower threshold values are defined correctly, you should be able to resolve the LMON018 error and continue monitoring your SAP landscape effectively.