How To Fix CNV_PE_GEN131 - Parameter &1 is not expected at this generation point

CNV_PE_GEN131 - Overview

• Message type: E = Error

• Message class: CNV_PE_GEN - Messages for object generation

• Message number: 131

• Message text: Parameter &1 is not expected at this generation point

What causes this issue?

In the definition of a transfer list parameter the link to the
corresponding interface parameter of the transfer object (for example,
function module) must be present. Furthermore some additional
information (such as <ZK>Technical</>, <ZK>Inactive</>, <ZK>Return
Evaluation ID</>, ...) must be present to ensure a proper generation of
runtime objects of the transfer method.
Such required information is not found for parameter &V1&.
Most likely the <ZK>adjust</> of the transfer list interface has not yet
taken place. This would also lead to a wrong generation of the DDIC
objects of the transfer list.

System Response

Error

How to fix this error?

Adjust the delivered area settings
Either execute the process tree activity <ZK>Adjust Delivered Area
Settings. </>
In case you are familiar with the technique of the posting engine you
may also execute the program <ZK>Adjust Transfer Method Interface and
Transfer List Interface</> from the Expert tab of the affected transfer
method. Note that you should set the flag <ZK>Force Transfer List
Adjustment</>.
Afterwards the generation of the DDIC objects for the transfer list must
take place.
Either execute the process tree activity <ZK>Generate DDIC Objects for
All Relevant Transfer Lists</>.
Alternatively you may also execute the program <ZK>Generate DDIC Objects
for Transfer List </>from the <ZK>Expert</> tab of the affected transfer
method.
Finally you can repeat the generation of the WL2POST function module

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.

CNV_PE_GEN131 - Details

• The SAP error message CNV_PE_GEN131, which states "Parameter &1 is not expected at this generation point," typically occurs during the execution of a conversion program or during data migration processes in SAP systems, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
  
  Cause:
  This error usually indicates that a parameter being passed to a function or method is not valid or not expected at the current stage of the process. This can happen due to several reasons, including:
  
  Incorrect Configuration: The parameters set in the migration or conversion settings may not align with the expected parameters for the current step in the process.
  Version Mismatch: The version of the migration tool or the source system may not be compatible with the parameters being used.
  Data Model Changes: Changes in the data model or structure that are not reflected in the migration settings can lead to this error.
  Missing or Incorrect Mapping: If