How To Fix 30201 - Error calling a method of the tree control

SAP Error Message - Details

• Message type: E = Error

• Message class: 30 - Service Master: Basic Data

• Message number: 201

• Message text: Error calling a method of the tree control

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 30201 - Error calling a method of the tree control ?

  The SAP error message 30201, which states "Error calling a method of the tree control," typically occurs in the context of SAP GUI or when working with certain SAP applications that utilize tree controls for displaying hierarchical data. This error can arise due to various reasons, including issues with the GUI, data inconsistencies, or problems with the underlying application logic.
  Causes:
  
  GUI Issues: The SAP GUI might be outdated or corrupted, leading to problems with rendering tree controls.
  Data Inconsistencies: If the data being displayed in the tree control is inconsistent or malformed, it can cause the control to fail when trying to render or manipulate the data.
  Application Logic Errors: There may be bugs or issues in the ABAP code or the application logic that interacts with the tree control.
  Memory Issues: Insufficient memory or resources on the client machine can also lead to this error.
  Network Issues: Connectivity problems between the client and the SAP server can disrupt the communication needed for the tree control to function properly.
  
  Solutions:
  
  Update SAP GUI: Ensure that you are using the latest version of the SAP GUI. If not, update it to the latest version available.
  Clear Cache: Clear the SAP GUI cache. Sometimes, cached data can cause issues with rendering controls.
  Check Data: Verify the data being displayed in the tree control. Ensure that it is consistent and correctly formatted.
  Restart SAP GUI: Close and restart the SAP GUI to refresh the session and clear any temporary issues.
  Check for Patches: Look for any available patches or notes from SAP that address this specific error. SAP Notes can provide fixes or workarounds for known issues.
  Review Application Logic: If you have access to the ABAP code, review the logic that populates the tree control for any potential errors or inefficiencies.
  Increase Memory: If you suspect memory issues, try increasing the memory allocation for the SAP GUI or the client machine.
  Network Stability: Ensure that your network connection is stable and that there are no interruptions in communication with the SAP server.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance related to error 30201. You can search for the error number in the SAP Support Portal.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered the same issue and what solutions they found effective.
  Logs and Traces: If the issue persists, consider enabling logging or tracing in the SAP GUI to gather more information about the error, which can be helpful for troubleshooting.
  
  If the problem continues after trying these solutions, it may be necessary to contact SAP support for further assistance.