How To Fix CNV_PE304 - Knowledge base of known applications is missing (see long text)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 304

• Message text: Knowledge base of known applications is missing (see long text)

What causes this issue?

To check which ledger totals tables are supported for a transfer, the
tool requires certain information within its knowledge base. However,
the knowledge base table (CNV_PE_TT_APPLC) is not filled in the current
system.

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?

This error indicates an error in the pre-delivered Customizing. 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_PE304 - Knowledge base of known applications is missing (see long text) ?

  The SAP error message CNV_PE304 indicates that the knowledge base of known applications is missing. This error typically arises during data migration or conversion processes, particularly when using SAP's tools for data migration, such as the SAP S/4HANA Migration Cockpit or other conversion tools.
  Cause:
  
  Missing Knowledge Base: The error suggests that the system cannot find the necessary knowledge base that contains the mappings and rules for the data conversion process.
  Configuration Issues: There may be issues with the configuration of the migration tools or the environment in which they are running.
  Installation Problems: The required components or packages for the migration tool may not be installed or properly configured in the SAP system.
  Version Compatibility: The version of the migration tool may not be compatible with the version of the SAP system you are using.
  
  Solution:
  
  Check Installation: Ensure that all necessary components for the migration tool are installed correctly. This may involve checking the installation logs or re-installing the migration tool.
  Update Knowledge Base: If the knowledge base is missing, you may need to download or update it. This can often be done through the SAP Service Marketplace or by applying the latest support packages.
  Configuration Review: Review the configuration settings for the migration tool to ensure that they are set up correctly. This includes checking any parameters related to the knowledge base.
  Consult Documentation: Refer to the official SAP documentation for the migration tool you are using. This documentation often contains troubleshooting steps and requirements for the knowledge base.
  SAP Notes: Check for relevant SAP Notes that may address this specific error. SAP Notes often provide fixes or workarounds for known issues.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and the error message.
  
  Related Information:
  
  SAP Migration Cockpit: This is a tool used for migrating data to SAP S/4HANA. Understanding how it works and its requirements can help in troubleshooting.
  SAP Notes and Knowledge Base Articles: Regularly check for updates and notes related to your specific version of SAP and the migration tools you are using.
  Community Forums: Engaging with the SAP Community can provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CNV_PE304 error and successfully proceed with your data migration or conversion process.