How To Fix CNV_PE305 - Posting key info already present for area &1 and target &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 305

• Message text: Posting key info already present for area &1 and target &2

What causes this issue?

The data is already present.

System Response

By default the data is not overwritten.

How to fix this error?

Check if this behavior suits your requirements:
If yes, no further action is required
If no, go to the respective troubleshooting activity of this activity
<ZK>Read Relevant Customizing</> and re-read the Customizing for this
area &V1&. This will first delete all entries for this area, then
re-read the Customizing from scratch.

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

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_PE305 - Posting key info already present for area &1 and target &2 ?

  The SAP error message CNV_PE305, which states "Posting key info already present for area &1 and target &2," typically occurs during data migration or conversion processes, particularly when using the SAP Conversion Tools or during the execution of a migration project. This error indicates that there is a conflict with the posting key information that is already present in the system for the specified area and target.
  Cause:
  
  
  Duplicate Posting Key Information: The error usually arises when the system detects that the posting key information for a specific area (e.g., a specific ledger or accounting area) and target (e.g., a specific document type) already exists in the database. This can happen if the data migration process is attempting to insert or update records that are already present.
  
  
  Incorrect Data Preparation: If the data being migrated has not been properly cleaned or prepared, it may contain duplicates or conflicts that lead to this error.
  
  
  Configuration Issues: There may be configuration settings in the SAP system that are causing conflicts with the posting keys being used.
  
  
  Solution:
  
  
  Check for Duplicates: Review the data being migrated to ensure that there are no duplicate entries for the posting key information in the source data. You may need to clean or deduplicate the data before attempting the migration again.
  
  
  Review Existing Data: Use transaction codes like SE16 or SE11 to check the relevant tables (e.g., BKPF, BSEG) for existing entries that match the area and target specified in the error message. This will help you identify if the data already exists.
  
  
  Adjust Migration Logic: If the migration process is designed to insert records, consider modifying it to update existing records instead, if applicable.
  
  
  Consult Migration Documentation: Review the documentation for the specific migration tool or process you are using to ensure that you are following the correct procedures and that your data is formatted correctly.
  
  
  Error Handling: Implement error handling in your migration scripts to catch and log such errors, allowing you to address them systematically.
  
  
  Seek SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific system configuration and migration scenario.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and others that can help you analyze the data.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Migration Tools: If you are using specific SAP migration tools (like SAP S/4HANA Migration Cockpit), refer to their documentation for best practices and troubleshooting tips.
  
  By following these steps, you should be able to identify the cause of the CNV_PE305 error and implement a solution to resolve it.