How To Fix CB452 - No messages sent

SAP Error Message - Details

• Message type: E = Error

• Message class: CB - PP-PI-PMA: Dialog Messages for Process Management

• Message number: 452

• Message text: No messages sent

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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Smart SAP Assistant

• What is the cause and solution for SAP error message CB452 - No messages sent ?

  The SAP error message CB452 ("No messages sent") typically occurs in the context of the SAP system's communication or messaging functionality, particularly when dealing with the SAP Business Workflow or SAP Business Communication Management. This error indicates that the system attempted to send a message, but no messages were actually sent due to various reasons.
  Causes:
  
  No Recipients Defined: The message may not have any recipients defined, which means there is no one to send the message to.
  Message Type Issues: The message type may not be correctly configured or may not exist in the system.
  Workflow Configuration: If this error occurs in a workflow context, it may be due to incorrect workflow configuration or missing steps in the workflow.
  User Status: The user or recipient may have a status that prevents them from receiving messages (e.g., inactive or blocked).
  Technical Issues: There may be underlying technical issues, such as problems with the messaging system or network issues.
  
  Solutions:
  
  Check Recipients: Ensure that the message has valid recipients defined. Verify that the recipient's user ID or email address is correct and active.
  Review Message Type: Check the configuration of the message type being used. Ensure that it is correctly set up in the system.
  Workflow Configuration: If applicable, review the workflow configuration to ensure that all necessary steps and recipients are correctly defined.
  User Status: Verify the status of the users involved. Ensure that they are active and able to receive messages.
  System Logs: Check the system logs for any additional error messages or warnings that may provide more context about the issue.
  Testing: Conduct tests to see if the issue persists with different message types or recipients to isolate the problem.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SWI1 (Work Item Selection) or SWI2_FREQ (Work Item Selection for Frequency) to monitor workflows and messages.
  Documentation: Review SAP documentation related to messaging and workflows for best practices and configuration guidelines.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or SAP support for further assistance.