How To Fix EWA857 - &3 &2 is not a reference parameter in the signature of function &1.

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 857

• Message text: &3 &2 is not a reference parameter in the signature of function &1.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message EWA857 - &3 &2 is not a reference parameter in the signature of function &1. ?

  The SAP error message EWA857 indicates that there is an issue with the function module or method signature in your ABAP code. Specifically, it suggests that a parameter (in this case, &3 or &2) is not defined as a reference parameter in the function signature of the function &1. 
  Cause:
  
  Parameter Definition Mismatch: The function module or method is expecting a reference parameter (using REF TO), but the parameter being passed is not defined as such in the calling program.
  Incorrect Parameter Type: The parameter types in the calling program do not match the expected types in the function module or method signature.
  Changes in Function Module: If the function module was modified (e.g., parameters were changed), the calling program may not have been updated accordingly.
  
  Solution:
  
  Check Function Module Signature: Review the signature of the function module or method &1 to confirm the expected parameter types. Ensure that the parameters being passed match the expected types.
  Update Calling Program: If the function module has been changed, update the calling program to ensure that it passes the correct types of parameters. If a reference parameter is expected, ensure that you are passing a reference variable.
  Use REF TO: If the function expects a reference parameter, ensure that you declare the variable as a reference type in your calling program. For example:
  DATA: lv_ref TYPE REF TO your_type.
  
  Check for Typographical Errors: Ensure that there are no typographical errors in the parameter names or types in both the function module and the calling program.
  Recompile: After making changes, recompile the affected programs to ensure that the changes take effect.
  
  Related Information:
  
  ABAP Documentation: Refer to the SAP Help Portal or ABAP documentation for more details on function module signatures and parameter types.
  Debugging: Use the ABAP debugger to step through the code and inspect the parameters being passed to the function module to identify any discrepancies.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to this error message.
  
  By following these steps, you should be able to resolve the EWA857 error and ensure that your ABAP code functions correctly.