How To Fix CMAC_FEE_CALC018 - Cannot create ALV tree control; program will be terminated

SAP Error Message - Details

• Message type: E = Error

• Message class: CMAC_FEE_CALC - Messages for Student Accounting

• Message number: 018

• Message text: Cannot create ALV tree control; program will be terminated

What causes this issue?

The system could not create the ALV tree control due to a system error.

How to fix this error?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CMAC_FEE_CALC018 - Cannot create ALV tree control; program will be terminated ?

  The SAP error message CMAC_FEE_CALC018 indicates that the system is unable to create an ALV (ABAP List Viewer) tree control, which is a common interface element used in SAP for displaying hierarchical data. This error typically occurs in custom programs or reports that utilize ALV for displaying data in a structured format.
  Causes:
  
  Memory Issues: The system may be running low on memory, which can prevent the creation of new UI elements like the ALV tree control.
  Incorrect Data Structure: The data being passed to the ALV tree control may not be structured correctly, leading to issues during the rendering process.
  Program Errors: There may be bugs or logical errors in the ABAP code that is responsible for creating the ALV tree control.
  Authorization Issues: The user may not have the necessary authorizations to execute the program or access certain data.
  SAP GUI Issues: Problems with the SAP GUI installation or configuration can also lead to this error.
  
  Solutions:
  
  Check Memory Usage: Monitor the system's memory usage and ensure that there is enough available memory. If necessary, consider increasing the memory allocation for the SAP instance.
  Review Data Structure: Ensure that the data being passed to the ALV tree control is correctly structured. Check for any inconsistencies or errors in the data.
  Debug the Program: Use the ABAP debugger to step through the code and identify where the error occurs. Look for any logical errors or exceptions that may be causing the issue.
  Check Authorizations: Verify that the user has the necessary authorizations to execute the program and access the required data.
  Update SAP GUI: Ensure that the SAP GUI is up to date. Sometimes, issues with the GUI can lead to unexpected errors.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this specific error.
  
  Related Information:
  
  ALV Tree Control: The ALV tree control is used to display hierarchical data in a tree format, allowing users to expand and collapse nodes to view details.
  ABAP Debugger: The ABAP debugger is a powerful tool for diagnosing issues in ABAP programs. It allows you to inspect variables, step through code, and analyze program flow.
  SAP Notes: SAP Notes are documents provided by SAP that contain information about known issues, fixes, and best practices. They can be searched using the error message or related keywords.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to your SAP Basis team or SAP support for further assistance.