How To Fix OL750 - Stack is empty

SAP Error Message - Details

• Message type: E = Error

• Message class: OL - Workflow object types: Run-time system

• Message number: 750

• Message text: Stack is empty

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OL750 - Stack is empty ?

  The SAP error message OL750 "Stack is empty" typically occurs in the context of SAP's ABAP programming environment, particularly when dealing with function modules, method calls, or when using certain transaction codes. This error indicates that the system is trying to access an empty stack, which can happen for various reasons.
  Causes:
  
  Incorrect Function Module Call: The error may arise if a function module is called without the necessary parameters or if the stack is not properly initialized.
  Program Logic Errors: There may be logical errors in the ABAP code that lead to the stack being emptied before it is accessed.
  Transaction Issues: If a transaction is not properly completed or if there are issues with the transaction flow, it can lead to this error.
  Memory Management Issues: Problems with memory allocation or management can also lead to an empty stack situation.
  
  Solutions:
  
  Check Function Module Calls: Ensure that all function modules are called with the correct parameters and that they are properly initialized.
  Debugging: Use the ABAP debugger to step through the code and identify where the stack is being emptied. Look for any POP or similar statements that might be removing items from the stack.
  Review Program Logic: Go through the program logic to ensure that the stack is being managed correctly. Make sure that all necessary data is pushed onto the stack before it is accessed.
  Transaction Flow: Verify that the transaction is being executed correctly and that all necessary steps are completed before the point where the error occurs.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve unexpected errors.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently releases notes that address specific error messages and provide guidance on how to resolve them.
  ABAP Documentation: Review the ABAP documentation for best practices on stack management and function module usage.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP expert or reach out to SAP support for further assistance.