How To Fix LAW2_MESSAGES221 - Structure of SDCCN session failed

SAP Error Message - Details

• Message type: E = Error

• Message class: LAW2_MESSAGES - LAW 2.0 Message Class

• Message number: 221

• Message text: Structure of SDCCN session failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LAW2_MESSAGES221 - Structure of SDCCN session failed ?

  The SAP error message LAW2_MESSAGES221, which indicates that the structure of the SDCCN (SAP Data Consistency Check Network) session has failed, typically arises during the execution of a data consistency check or during the transport of data between systems. This error can occur for various reasons, including issues with the configuration, data inconsistencies, or problems with the transport layer.
  Causes:
  
  Data Inconsistencies: There may be inconsistencies in the data being checked or transported, which can lead to failures in the session structure.
  Configuration Issues: Incorrect configuration settings in the SDCCN or related components can cause the session to fail.
  Transport Layer Problems: Issues with the transport layer, such as missing or corrupted transport requests, can lead to this error.
  Version Mismatch: If there are version mismatches between the source and target systems, it can lead to structural failures.
  Network Issues: Temporary network issues during the data transfer can also cause this error.
  
  Solutions:
  
  Check Data Consistency: Review the data involved in the SDCCN session for any inconsistencies. Use transaction codes like SE11 or SE16 to inspect the relevant tables.
  Review Configuration: Ensure that the configuration settings for SDCCN are correct. Check the settings in transaction code SDCCN and ensure that all necessary parameters are set correctly.
  Transport Request Review: Check the transport requests involved in the session. Ensure that they are complete and not corrupted. You can use transaction code SE09 or SE10 to review transport requests.
  Recreate the Session: If the session is corrupted, you may need to delete the existing session and recreate it. This can sometimes resolve structural issues.
  Check Logs: Review the logs for more detailed error messages. You can check the SDCCN logs in transaction code SDCCN or look for relevant entries in the system log (transaction code SM21).
  System Synchronization: Ensure that both the source and target systems are synchronized in terms of version and configuration.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that can resolve the issue.
  
  Related Information:
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SDCCN: For managing the SDCCN sessions.
  SE09/SE10: For managing transport requests.
  SM21: For checking system logs.
  SE11/SE16: For viewing table contents.
  
  
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs and steps taken to troubleshoot.
  
  
  By following these steps, you should be able to identify and resolve the cause of the LAW2_MESSAGES221 error in your SAP system.