How To Fix CNV_PE405 - Build transfer list failed; see long text

CNV_PE405 - Overview

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 405

• Message text: Build transfer list failed; see long text

What causes this issue?

During the build up of the transfer list, a non catchable exception
occurred resulting in a runtime error. Therefore calling the WL210
function module (<ZH>&V1&</>) ended with technical sy-subrc <ZH>&V2&</>.

System Response

Error message: <ZH>&V3&</>
Affected worklist item: &V4&

How to fix this error?

Go to transaction <DS:TRAN.ST22>ST22</> and check the runtime error.
&ADDITIONAL_HINTS&
The error most likely occurred in a method <ZK>Execute</> of a generated
class <ZK>/1LT/CL_GEN_TR*</>. This class is the runtime object of a
transformation rule. You can navigate into the source code of the method
using <AB>ST22</>. There you can identify the corresponding
transformation rule name (see comment lines on top of the source code).

Procedure for System Administrators

Sy-subrc,,Meaning
91,,Error message
92,,Communication failure
99,,System failure

Error message extract from SAP system. Copyright SAP SE.

CNV_PE405 - Details

• The SAP error message CNV_PE405, which states "Build transfer list failed; see long text," typically occurs during data migration or conversion processes, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. This error indicates that there was a failure in building the transfer list, which is essential for transferring data from one system to another.
  Causes:
  
  Data Consistency Issues: There may be inconsistencies or errors in the source data that prevent the transfer list from being built.
  Configuration Errors: Incorrect configuration settings in the migration tool or in the source/target systems can lead to this error.
  Missing Authorizations: The user executing the migration may lack the necessary authorizations to perform the operation.
  Technical Issues: There could be underlying technical issues such as database connectivity problems, memory issues, or system performance bottlenecks.
  Incorrect Mapping: If the mapping of fields between the source and target systems is incorrect or incomplete, it can lead to