How To Fix C0323 - - Error when assigning interface parameter &

SAP Error Message - Details

• Message type: E = Error

• Message class: C0 - PP-PI: Messages for PI Sheet and Syntax Checker

• Message number: 323

• Message text: - Error when assigning interface parameter &

What causes this issue?

This process instruction is of type "dynamic function call".
Using characteristic PPPI_IMPORT_PARAMETER, you assigned interface
parameter &V1& of the function module to the process instruction. This
assignment is invalid for one of the reasons below:
No export parameter &V1& is defined in the function module you want to
call.
Characteristic PPPI_IMPORT_PARAMETER is assigned parameter name &V1&
twice in the process instruction.

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?

Check and correct the assignment of parameters in the process
instruction.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C0323 - - Error when assigning interface parameter & ?

  The SAP error message C0323, which states "Error when assigning interface parameter &," typically occurs when there is an issue with the assignment of parameters in a function module or method interface. This error can arise due to various reasons, including data type mismatches, incorrect parameter names, or issues with the data being passed.
  Causes:
  
  Data Type Mismatch: The data type of the variable being passed does not match the expected data type of the interface parameter.
  Incorrect Parameter Name: The parameter name used in the call does not match the name defined in the function module or method.
  Null or Uninitialized Variables: The variable being passed may be null or uninitialized, leading to assignment issues.
  Length Issues: The length of the data being passed may exceed the defined length of the parameter.
  Structure Mismatch: If a structure is being passed, the fields in the structure may not match the expected fields in the interface.
  
  Solutions:
  
  Check Data Types: Ensure that the data types of the variables being passed match the expected data types of the interface parameters.
  Verify Parameter Names: Double-check the parameter names in the function module or method definition to ensure they are being called correctly.
  Initialize Variables: Make sure that all variables being passed are properly initialized before the call.
  Check Lengths: Ensure that the length of the data being passed does not exceed the defined length of the interface parameters.
  Review Structures: If using structures, verify that the fields in the structure match the expected fields in the interface.
  
  Related Information:
  
  Debugging: Use the SAP debugger to step through the code and identify where the error occurs. This can help pinpoint the exact parameter causing the issue.
  Documentation: Refer to the documentation of the function module or method to understand the expected parameters and their types.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to this error message.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the C0323 error in your SAP environment.