How To Fix FDT_EXPRESSIONS826 - Exception &1 does not exist in function module &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 826

• Message text: Exception &1 does not exist in function module &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS826 - Exception &1 does not exist in function module &2 ?

  The SAP error message FDT_EXPRESSIONS826 indicates that there is an issue with a function module where a specific exception is being referenced, but it does not exist in the specified function module. This error typically arises in the context of using the SAP FDT (Form Data Transfer) framework, particularly when working with expressions or custom logic.
  Cause:
  
  Missing Exception: The exception referenced in the expression does not exist in the specified function module. This could be due to a typo in the exception name or the function module not being updated to include the exception.
  Function Module Changes: If the function module has been modified or if it is a custom function module, the exception may have been removed or renamed.
  Transport Issues: If the function module was transported from one system to another, the transport might not have included the latest changes, leading to discrepancies.
  
  Solution:
  
  
  Check Function Module: 
  
  Go to transaction SE37 (Function Module) and enter the name of the function module specified in the error message.
  Check the exceptions defined in the function module. Ensure that the exception mentioned in the error message is listed there.
  
  
  
  Update Exception:
  
  If the exception is missing, you may need to add it to the function module. This involves modifying the function module to include the necessary exception.
  If the exception name is incorrect, update the expression to reference the correct exception.
  
  
  
  Review Changes:
  
  If the function module has been recently changed, review the change logs to understand what modifications were made and whether they affected the exceptions.
  
  
  
  Transport Check:
  
  If the function module was transported, ensure that the transport request included all necessary changes. You may need to re-transport the function module or manually update it in the target system.
  
  
  
  Testing:
  
  After making the necessary changes, test the functionality again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE37: Function Module
  SE80: Object Navigator (to check related objects)
  SE11: Data Dictionary (to check related data elements)
  
  
  
  Documentation: Review SAP documentation related to the FDT framework and function modules for best practices and guidelines.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  
  
  Debugging: If the issue persists, consider debugging the function module to trace where the exception is being called and why it is not found.
  
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.