How To Fix CNV_20000018 - Caution: Conversion of table &1 may terminate

CNV_20000018 - Overview

• Message type: E = Error

• Message class: CNV_20000 - Messages for fiscal year change

• Message number: 018

• Message text: Caution: Conversion of table &1 may terminate

What causes this issue?

During an org. dependent conversion, duplicate keys may occur for LIS
structures because the fiscal year variant is not part of the key.(see
also Note 765598)

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

System Response

If a duplicate key occurs during the conversion, the conversion process
is stopped for this table and the original status is re-created.

Error message extract from SAP system. Copyright SAP SE.

CNV_20000018 - Details

• The SAP error message CNV_20000018 indicates a caution regarding the conversion of a specific table during a data migration or conversion process. This message typically arises in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  
  Cause:
  The error message CNV_20000018 suggests that the conversion of the specified table (denoted as &1 in the message) may terminate unexpectedly. This can happen due to several reasons, including:
  
  Data Integrity Issues: The data in the table may not meet the required integrity constraints, leading to potential failures during conversion.
  Incompatible Data Types: There may be mismatches between the source and target data types, causing conversion issues.
  Large Volume of Data: If the table contains a large volume of data, it may lead to performance issues or timeouts during the conversion process.
  Missing or Incorrect Configuration: The conversion process may not be properly configured, leading to unexpected behavior.
  Custom Code