How To Fix CMP_NEW166 - Internal error; no messages will be deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: CMP_NEW - Billing: Complaint Management

• Message number: 166

• Message text: Internal error; no messages will be deleted

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.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMP_NEW166 - Internal error; no messages will be deleted ?

  The SAP error message CMP_NEW166, which states "Internal error; no messages will be deleted," typically occurs in the context of the SAP system's message processing, particularly when dealing with the Communication Management (CM) or similar components. This error indicates that the system encountered an internal issue that prevented it from deleting messages as expected.
  Causes:
  
  System Bugs: There may be a bug in the SAP system or a specific version that leads to this internal error.
  Database Issues: Problems with the database, such as corruption or connectivity issues, can lead to failures in message processing.
  Configuration Errors: Incorrect configuration settings in the message processing or communication management settings can trigger this error.
  Resource Limitations: Insufficient system resources (like memory or processing power) can lead to unexpected behavior in message handling.
  Transport Issues: If messages are being transported between systems, issues in the transport layer can cause this error.
  
  Solutions:
  
  Check SAP Notes: Look for relevant SAP Notes in the SAP Support Portal. SAP frequently releases notes that address known issues and provide patches or workarounds.
  System Logs: Review the system logs (transaction SM21) and the application logs (transaction SLG1) for more detailed error messages that can provide insights into the root cause.
  Database Consistency Check: Perform a consistency check on the database to ensure there are no underlying issues affecting message processing.
  Configuration Review: Verify the configuration settings related to message processing and communication management to ensure they are set up correctly.
  System Resources: Monitor system resources to ensure that the SAP system has adequate memory and processing power. If necessary, consider scaling up resources.
  Restart Services: Sometimes, restarting the relevant services or the entire SAP system can resolve transient issues.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM21 (System Log), SLG1 (Application Log), and SM37 (Job Monitoring) to help diagnose the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation for the specific module or component you are working with to understand the expected behavior and configuration settings.
  
  By following these steps, you should be able to identify the cause of the CMP_NEW166 error and implement a suitable solution.