How To Fix CNV_PE_CHECK_V2048 - Extension table &1: Extension rule does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_CHECK_V2 - Check Messages (Version 2020)

• Message number: 048

• Message text: Extension table &1: Extension rule does not exist

What causes this issue?

Extension tables are filled during the data selection with help of
extension rules. These rules are called in the target system and must be
available there. An extension rule for table &V1&. does <ZH>not</>
exist.

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?

Extension rules are created automatically when you add an extension
table to your source tables.
You <ZH>cannot</> create it yourself afterwards.
Contact SAP for support.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_CHECK_V2048 - Extension table &1: Extension rule does not exist ?

  The SAP error message "CNV_PE_CHECK_V2048 Extension table &1: Extension rule does not exist" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system is unable to find a defined extension rule for the specified extension table.
  Cause:
  
  
  Missing Extension Rule: The primary cause of this error is that the extension rule for the specified extension table (denoted by &1) has not been defined in the system. Extension rules are necessary for the system to understand how to handle additional fields or data structures that are not part of the standard table.
  
  
  Configuration Issues: There may be issues with the configuration of the migration project or the data model, leading to the absence of the required extension rules.
  
  
  Incorrect Table Name: The table name provided in the error message may be incorrect or not properly defined in the migration settings.
  
  
  Solution:
  
  
  Define Extension Rules: 
  
  Check if the extension rule for the specified table exists. If it does not, you will need to create it. This can typically be done in the SAP system using transaction codes related to data migration or by using the relevant configuration tools.
  Ensure that the extension rules are correctly defined in the migration cockpit or the relevant data migration tool.
  
  
  
  Review Migration Settings: 
  
  Go through the migration project settings to ensure that all necessary configurations are in place. This includes checking the mapping of fields and ensuring that all required tables and rules are defined.
  
  
  
  Consult Documentation: 
  
  Refer to the SAP documentation or guides related to the specific migration tool you are using. This can provide insights into how to properly set up extension rules and troubleshoot related issues.
  
  
  
  Check for Updates: 
  
  Ensure that your SAP system is up to date with the latest support packages and notes, as there may be fixes or enhancements related to data migration processes.
  
  
  
  Contact SAP Support: 
  
  If the issue persists after checking the above points, consider reaching out to SAP support for assistance. They can provide more specific guidance based on your system configuration and the context of the error.
  
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may include examples and best practices for defining extension rules.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to resolve the error and successfully define the necessary extension rules for your data migration process.