How To Fix 1F156 - Error during determination of last tree number

SAP Error Message - Details

• Message type: E = Error

• Message class: 1F - BKK: Beziehungen

• Message number: 156

• Message text: Error during determination of last tree number

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 1F156 - Error during determination of last tree number ?

  The SAP error message 1F156 ("Error during determination of last tree number") typically occurs in the context of SAP's classification system, particularly when dealing with the classification of materials or objects in the system. This error indicates that there is an issue with retrieving or determining the last tree number for a classification tree.
  Causes:
  
  Missing Configuration: The classification tree may not be properly configured or may be missing necessary entries.
  Authorization Issues: The user may not have the required authorizations to access the classification data.
  Database Issues: There could be issues with the database, such as missing or corrupted entries related to the classification tree.
  Transport Issues: If the classification tree was recently transported from another system, there may have been issues during the transport process.
  System Bugs: There may be bugs or inconsistencies in the SAP system that are causing the error.
  
  Solutions:
  
  Check Configuration: Verify that the classification tree is correctly configured. Ensure that all necessary nodes and entries are present.
  Authorization Check: Ensure that the user has the appropriate authorizations to access the classification data. This can be checked in transaction SU53 or by consulting with your security team.
  Database Consistency: Run database consistency checks to ensure that there are no missing or corrupted entries. You can use transaction SE11 to check the relevant database tables.
  Transport Logs: If the issue arose after a transport, check the transport logs for any errors or warnings that may indicate what went wrong during the transport.
  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 resolve the issue.
  Debugging: If you have access to debugging tools, you can try to debug the process to identify where the error is occurring in the code.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like CL02 (Change Class) or CL03 (Display Class) to investigate the classification trees.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  Documentation: Review SAP documentation related to classification and classification trees for additional insights and best practices.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.