How To Fix CNV_PE457 - Sender is already blocked - no action required

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 457

• Message text: Sender is already blocked - no action required

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 CNV_PE457 - Sender is already blocked - no action required ?

  The SAP error message CNV_PE457: Sender is already blocked - no action required typically occurs in the context of data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This message indicates that the system has detected that a sender (which could be a data source or a specific data record) is already in a blocked state, and therefore, no further action is needed for that sender.
  Cause:
  
  Data Locking: The sender might be locked due to ongoing processes or transactions that are currently being executed. This is a common scenario in data migration where multiple processes might be trying to access the same data.
  Configuration Issues: There may be configuration settings that prevent the sender from being processed again until the current operation is completed.
  Error Handling: The system might have encountered an error previously, leading to the sender being marked as blocked to prevent further processing until the issue is resolved.
  
  Solution:
  
  Check Current Processes: Investigate if there are any ongoing processes that might be locking the sender. You can use transaction codes like SM50 or SM66 to monitor active processes in the system.
  Release Locks: If you identify that a process is holding a lock on the sender, you may need to wait for it to complete or, if appropriate, terminate the process (be cautious with this approach).
  Review Logs: Check the logs for any previous errors that might have caused the sender to be blocked. This can provide insights into what went wrong and how to resolve it.
  Configuration Review: Ensure that the configuration settings for the data migration process are correct and that there are no restrictions preventing the sender from being processed.
  Retry the Operation: Once you have addressed any locking issues or configuration problems, you can retry the operation that triggered the error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLT monitoring tools, SM37 (job monitoring), and ST22 (dump analysis) to help diagnose issues.
  SAP Notes: Check for any SAP Notes related to the error message CNV_PE457 for specific patches or updates that may address known issues.
  Documentation: Review the documentation for the specific data migration tool you are using, as it may provide additional context or troubleshooting steps for this error.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.