How To Fix CNV_PE347 - Transformation rule &1 already exists for transfer method &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 347

• Message text: Transformation rule &1 already exists for transfer method &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE347 - Transformation rule &1 already exists for transfer method &2 ?

  The SAP error message CNV_PE347 indicates that there is a conflict in the transformation rules during a data transfer process. Specifically, it means that a transformation rule with the same identifier already exists for the specified transfer method. This can occur in various scenarios, particularly during data migration or conversion processes using SAP's tools.
  Cause:
  
  Duplicate Transformation Rules: The most common cause is that the transformation rule you are trying to create or modify already exists in the system for the specified transfer method.
  Incorrect Configuration: There may be an issue with the configuration of the data transfer process, leading to attempts to create duplicate entries.
  Data Migration Tools: If you are using tools like SAP S/4HANA Migration Cockpit or other data migration tools, this error can arise if the same transformation rule is being defined multiple times.
  
  Solution:
  
  
  Check Existing Transformation Rules: 
  
  Go to the relevant transaction or configuration area where transformation rules are defined.
  Search for the transformation rule using the identifier provided in the error message (&1) and the transfer method (&2).
  If a duplicate exists, you may need to modify or delete the existing rule before creating a new one.
  
  
  
  Modify the Rule: If the existing transformation rule is valid and should be retained, consider modifying it to meet your requirements instead of creating a new one.
  
  
  Review Configuration: Ensure that your configuration settings for the data transfer process are correct and do not lead to the creation of duplicate rules.
  
  
  Consult Documentation: Refer to the SAP documentation or help resources related to the specific data migration tool you are using for additional guidance on handling transformation rules.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is part of a larger migration project.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to access transformation rules, such as LTMC for Migration Cockpit or LTMOM for the Migration Object Modeler.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional solutions related to this error message.
  Data Migration Best Practices: Familiarize yourself with best practices for data migration in SAP to avoid common pitfalls, including proper planning and testing of transformation rules.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.