How To Fix EWA851 - The optional &3 &2 cannot be found in the signature of function &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: EWA - IS-U-WA: Waste Management

• Message number: 851

• Message text: The optional &3 &2 cannot be found in the signature of function &1.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EWA851 - The optional &3 &2 cannot be found in the signature of function &1. ?

  The SAP error message EWA851 indicates that there is an issue with the function module or method signature in your ABAP code. Specifically, it means that an optional parameter (denoted by &3 and &2) is not found in the signature of the function (&1). This can occur for several reasons, including changes in the function module or method definition, or incorrect usage of the function in your code.
  Cause:
  
  Changes in Function Module: The function module or method may have been modified, and the optional parameter was removed or renamed.
  Incorrect Parameter Usage: The code calling the function may be passing parameters incorrectly, or the parameters may not match the expected signature.
  Version Mismatch: If you are working in a system where the function module has been updated in a different version, the signature may differ from what your code expects.
  Transport Issues: If the function module was transported from another system, it may not have been transported correctly, leading to discrepancies in the signature.
  
  Solution:
  
  Check Function Module Signature: Go to transaction SE37 (Function Builder) and check the signature of the function module or method you are calling. Ensure that the parameters you are passing match the expected signature.
  Update Code: If the function module has changed, update your ABAP code to match the new signature. Remove or adjust the parameters as necessary.
  Consult Documentation: If the function module is part of a standard SAP package, check the release notes or documentation for any changes that may have been made to the function.
  Debugging: Use the debugger to step through the code and identify where the error occurs. This can help you pinpoint the exact parameter causing the issue.
  Check for Transport Issues: If you suspect a transport issue, verify that the function module is correctly implemented in your system and that all necessary transports have been applied.
  
  Related Information:
  
  Transaction Codes: SE37 (Function Builder), SE80 (Object Navigator), SE11 (Data Dictionary).
  ABAP Documentation: Review the SAP Help Portal for documentation related to the specific function module or method you are using.
  SAP Notes: Search for relevant SAP Notes that may address known issues or changes related to the function module in question.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.