How To Fix WM01301 - An error occurred when calling a method of the tree model

SAP Error Message - Details

• Message type: E = Error

• Message class: WM01 - Assortments IS-R Enhancements

• Message number: 301

• Message text: An error occurred when calling a method of the tree model

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 WM01301 - An error occurred when calling a method of the tree model ?

  The SAP error message WM01301, which states "An error occurred when calling a method of the tree model," typically occurs in the context of the Warehouse Management (WM) module or related functionalities in SAP. This error can arise due to various reasons, and understanding the cause is essential for troubleshooting.
  Possible Causes:
  
  Data Inconsistencies: There may be inconsistencies in the data being processed, such as missing or incorrect entries in the database tables related to the tree model.
  Authorization Issues: The user may not have the necessary authorizations to access certain data or perform specific actions within the tree model.
  Configuration Errors: Incorrect configuration settings in the WM module or related components can lead to this error.
  System Bugs: There may be bugs or issues in the SAP system version you are using that affect the tree model functionality.
  Performance Issues: If the system is under heavy load or if there are performance issues, it may lead to timeouts or errors when calling methods.
  
  Solutions:
  
  Check Data Integrity: Verify the data in the relevant tables to ensure there are no inconsistencies. You can use transaction codes like SE16 or SE11 to check the data.
  Review Authorizations: Ensure that the user encountering the error has the necessary authorizations. You can check this using transaction SU53 to analyze authorization failures.
  Configuration Review: Review the configuration settings in the WM module to ensure they are set up correctly. This may involve checking settings in customizing (transaction SPRO).
  System Logs: Check the system logs (transaction SLG1) for any additional error messages or warnings that may provide more context about the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve known issues.
  Performance Monitoring: Monitor system performance and check for any bottlenecks that may be causing the error. You can use transaction ST22 for dumps or SM21 for system logs.
  Contact SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SE16: Data Browser
  SU53: Authorization Check
  SPRO: Customizing
  SLG1: Application Log
  ST22: Dump Analysis
  SM21: System Log
  
  
  Documentation: Review SAP documentation related to Warehouse Management and tree model functionalities for additional insights.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the cause of the WM01301 error and implement a suitable solution.