How To Fix AM860 - Stack of global variables is empty

SAP Error Message - Details

• Message type: E = Error

• Message class: AM - Business Address Services

• Message number: 860

• Message text: Stack of global variables is empty

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AM860 - Stack of global variables is empty ?

  The SAP error message AM860, which states "Stack of global variables is empty," typically occurs in the context of ABAP programming, particularly when dealing with global variables or data structures that are expected to be populated but are not.
  Cause:
  
  Uninitialized Variables: The error often arises when a program attempts to access or manipulate a global variable that has not been initialized or has been cleared.
  Incorrect Logic: There may be a logical error in the code where the program expects certain data to be present in the stack but finds it empty.
  Scope Issues: The variable might be out of scope or not properly declared in the context where it is being accessed.
  Program Flow: If the program flow skips the part where the global variable is supposed to be populated, it can lead to this error.
  
  Solution:
  
  Initialization: Ensure that all global variables are properly initialized before they are accessed. This can be done by assigning default values or checking if they are populated before use.
  Debugging: Use the ABAP debugger to step through the code and check the state of the global variables at runtime. This can help identify where the variable is being cleared or not set.
  Code Review: Review the logic of the program to ensure that all paths that lead to the use of the global variable also include paths that initialize or populate it.
  Error Handling: Implement error handling to check if the stack of global variables is empty before attempting to access it. This can prevent the program from crashing and allow for graceful handling of the situation.
  Documentation: Ensure that the usage of global variables is well documented, so that other developers understand the expected flow and initialization requirements.
  
  Related Information:
  
  ABAP Documentation: Refer to the official SAP ABAP documentation for best practices on variable declaration and initialization.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Community Forums: Engage with SAP community forums or platforms like SAP Community, Stack Overflow, or SAP Developer Network (SDN) for insights from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to diagnose and resolve the AM860 error in your SAP environment.