How To Fix KO420 - Processing was terminated because there were too many messages

SAP Error Message - Details

• Message type: E = Error

• Message class: KO - Master data for CO orders

• Message number: 420

• Message text: Processing was terminated because there were too many messages

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message KO420 - Processing was terminated because there were too many messages ?

  The SAP error message KO420, which states "Processing was terminated because there were too many messages," typically occurs in the context of the SAP system when a transaction or process generates an excessive number of messages. This can happen in various scenarios, such as during the execution of a batch job, a long-running transaction, or when there are many notifications or alerts being generated.
  Cause:
  
  Excessive Message Generation: The primary cause of this error is that the system has a limit on the number of messages that can be processed or displayed at one time. If a transaction generates more messages than this limit, the process will be terminated.
  Configuration Settings: The system may have specific configuration settings that define the maximum number of messages allowed. If these settings are too low for the volume of data being processed, it can lead to this error.
  Long-running Processes: If a process takes too long to complete and generates messages continuously, it can exceed the threshold for message handling.
  Custom Code or Enhancements: Custom ABAP code or enhancements that generate messages without proper control can also lead to this error.
  
  Solution:
  
  Review Message Generation: Analyze the process that is generating the messages. Identify if there are unnecessary messages being generated and modify the logic to reduce the number of messages.
  Increase Message Limit: If appropriate, consider increasing the limit for the number of messages that can be processed. This can usually be done in the system configuration settings.
  Batch Processing: If the process can be broken down into smaller batches, consider implementing batch processing to reduce the number of messages generated at one time.
  Error Handling: Implement better error handling in custom code to ensure that messages are only generated when necessary and that they are meaningful.
  Monitoring and Alerts: Set up monitoring to track message generation and alert administrators when thresholds are being approached, allowing for proactive management.
  
  Related Information:
  
  Transaction Codes: You may want to check transaction codes like SM21 (System Log) or SLG1 (Application Log) to get more details about the messages being generated and the context in which the error occurred.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for message handling.
  Performance Tuning: Consider performance tuning of the processes involved to ensure they run efficiently and do not generate excessive messages.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation and resolution.