How To Fix AH460 - Output operand &1 is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: AH - IS-U billing (master data)

• Message number: 460

• Message text: Output operand &1 is not unique

What causes this issue?

In the case of rate steps with several output operands, you are not
permitted to use the same operand more than once.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AH460 - Output operand &1 is not unique ?

  The SAP error message AH460, which states "Output operand &1 is not unique," typically occurs in the context of ABAP programming, particularly when dealing with output parameters in function modules or methods. This error indicates that the system has encountered a situation where it cannot determine which output operand to use because there are multiple candidates.
  Cause:
  The primary cause of this error is that the output parameter (denoted as &1 in the error message) is ambiguous. This can happen in several scenarios, such as:
  
  Multiple output parameters in a function module or method have the same name or are defined in a way that the system cannot distinguish between them.
  The function module or method is being called in a way that does not clearly specify which output parameter should be used.
  
  Solution:
  To resolve the AH460 error, you can take the following steps:
  
  
  Check Function Module/Method Definition:
  
  Review the definition of the function module or method where the error occurs. Ensure that all output parameters have unique names.
  If there are multiple parameters with the same name, consider renaming them to avoid ambiguity.
  
  
  
  Review Calling Code:
  
  Look at the code that calls the function module or method. Ensure that you are correctly specifying the output parameters.
  If you are using a structure or table to pass parameters, ensure that the structure/table does not contain duplicate fields.
  
  
  
  Use Explicit Naming:
  
  When calling the function module or method, use explicit naming for the output parameters. This can help the system understand which parameter you are referring to.
  
  
  
  Check for Aliases:
  
  If you are using aliases or have defined any type of mapping, ensure that they do not create ambiguity in the output parameters.
  
  
  
  Debugging:
  
  If the issue persists, consider using the debugger to step through the code and identify where the ambiguity arises.
  
  
  
  Related Information:
  
  Documentation: Refer to the SAP documentation for the specific function module or method you are working with to understand its parameters and expected usage.
  SAP Notes: Check the SAP Support Portal for any relevant notes or updates related to the error message AH460.
  Community Forums: Engage with the SAP community forums or Stack Overflow for insights from other developers who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the AH460 error in your SAP environment.