How To Fix CPOC128 - Parameter &1: Invalid parameter type

SAP Error Message - Details

• Message type: E = Error

• Message class: CPOC - PP-PI-PMA: Process Operator Cockpit Messages

• Message number: 128

• Message text: Parameter &1: Invalid parameter type

What causes this issue?

A function call has been defined in the process instruction. You tried
to assign parameter &V1& to function module &V2&.
However, this parameter cannot be passed on since the parameter type
used for parameter &V1& in the process instruction is not the same as
the parameter type defined in the Function Builder.

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

System Response

How to fix this error?

Check in the <DS:TRAN.SE37>Function Builder</> which parameter type is
defined for parameter &V1& of function module &V2&.
Correct the parameter characteristic in the process instruction
accordingly.
<ZH>Note the following:</>
In the process instruction, you must assign the function module's
import parameters as export parameters. Use characteristic
PPPI_EXPORT_PARAMETER.
In the process instruction, you must assign the function module's
export parameters as import parameters. Use characteristic
PPPI_IMPORT_PARAMETER.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CPOC128 - Parameter &1: Invalid parameter type ?

  The SAP error message CPOC128, which states "Parameter &1: Invalid parameter type," typically occurs in the context of SAP's Process Chain or when dealing with process variants, particularly in the context of data extraction or data processing.
  Cause:
  The error is usually caused by one of the following issues:
  
  Incorrect Parameter Type: The parameter being passed to a function or process is of an unexpected type. For example, a numeric value might be expected, but a string is provided instead.
  Configuration Issues: There may be a misconfiguration in the process chain or variant settings where the expected parameter types do not match the actual types being used.
  Data Type Mismatch: The data type defined in the process chain or variant does not match the data type of the actual data being processed.
  
  Solution:
  To resolve the CPOC128 error, you can take the following steps:
  
  Check Parameter Definitions: Review the parameters defined in the process chain or variant. Ensure that the data types of the parameters match the expected types.
  Validate Input Values: If the error occurs during execution, check the values being passed to the parameters. Ensure that they conform to the expected data types.
  Review Process Chain Configuration: Go through the configuration of the process chain to ensure that all parameters are correctly defined and that there are no discrepancies in the expected types.
  Debugging: If you have access to debugging tools, you can set breakpoints and inspect the values being passed to the parameters at runtime to identify where the mismatch occurs.
  Consult Documentation: Refer to SAP documentation or help resources for specific details about the parameters and their expected types in the context of the process you are working with.
  
  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.
  Community Forums: SAP Community and other forums can be helpful to see if other users have encountered the same issue and what solutions they found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSPC (Process Chain Maintenance) to manage and troubleshoot process chains effectively.
  
  By following these steps, you should be able to identify and resolve the cause of the CPOC128 error in your SAP environment.