How To Fix SMT147 - A variable with incorrect category was assigned to parameter &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 147

• Message text: A variable with incorrect category was assigned to parameter &1

What causes this issue?

A variable was transferred to parameter &V1& of class CL_SMT_ENGINE
(method EXECUTE or PREFETCH) and the category of this variable differs
from Customizing of the mapping step.

System Response

Processing was terminated.

How to fix this error?

Note that the category of the source and target structures is specified
in Customizing of the mapping step. Usually, the error arises because
the mapping tool has been called up incorrectly. That is, the user has
given an incorrect variable to an input parameter.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SMT147 - A variable with incorrect category was assigned to parameter &1 ?

  The SAP error message SMT147, which states "A variable with incorrect category was assigned to parameter &1," typically occurs in the context of SAP's Business Warehouse (BW) or when working with ABAP programs that involve variables and parameters. This error indicates that there is a mismatch between the expected data type or category of a variable and the parameter it is being assigned to.
  Cause:
  
  Data Type Mismatch: The variable being assigned does not match the expected data type of the parameter. For example, if a character variable is assigned to a numeric parameter, this error may occur.
  Incorrect Variable Category: The variable may be defined in a way that does not align with the parameter's expected category (e.g., a local variable being assigned to a global parameter).
  Incorrect Context: The variable might be used in a context where it is not valid, such as trying to use a local variable outside its scope.
  
  Solution:
  
  Check Variable Definitions: Review the definitions of the variables and parameters involved. Ensure that the data types and categories match. You can do this by checking the data dictionary or the ABAP code where the variables are defined.
  Adjust Data Types: If there is a mismatch, you may need to convert the variable to the appropriate data type before assignment. Use conversion functions or methods to ensure compatibility.
  Scope Verification: Ensure that the variable is being used within its valid scope. If it is a local variable, make sure it is not being accessed outside of its defined context.
  Parameter Configuration: If the parameter is part of a function module or method, check its definition to ensure it is set up correctly to accept the variable being passed.
  Debugging: Use the debugger to step through the code and identify where the assignment is failing. This can provide insights into the values and types of the variables at runtime.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  Documentation: Refer to the SAP documentation for the specific module you are working with (e.g., BW, ABAP) to understand the expected data types and parameter configurations.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed. Other users may have encountered the same error and can provide insights or solutions.
  
  By following these steps, you should be able to identify the root cause of the SMT147 error and implement a solution to resolve it.