How To Fix MN304 - Error in number assignment, condition record (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 304

• Message text: Error in number assignment, condition record (internal error)

What causes this issue?

During internal number assignment, the number of a condition record was
duplicated. This would lead to a database error if the data were saved.

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?

Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN304 - Error in number assignment, condition record (internal error) ?

  The SAP error message MN304, which indicates "Error in number assignment, condition record (internal error)," typically arises during the creation or modification of condition records in the pricing procedure. This error can be caused by several factors, and understanding the root cause is essential for resolving it.
  Causes of MN304 Error
  
  
  Number Range Issues: The most common cause is that the number range for the condition records is not properly defined or has been exhausted. This can happen if the number range is not set up correctly in the configuration or if the defined range has been fully utilized.
  
  
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to create or modify condition records, leading to internal errors.
  
  
  Configuration Errors: Incorrect configuration in the pricing procedure or condition types can lead to issues when the system tries to assign numbers to new records.
  
  
  Database Issues: There may be underlying database issues, such as locks or inconsistencies, that prevent the system from assigning numbers correctly.
  
  
  Custom Code: If there are custom enhancements or modifications in the pricing logic, they might interfere with the standard number assignment process.
  
  
  Solutions to MN304 Error
  
  
  Check Number Ranges:
  
  Go to transaction code SNRO (Number Range Objects) and check the number range object related to the condition records (e.g., KONN for condition records).
  Ensure that the number range is defined correctly and that there are available numbers in the range. If necessary, extend the number range.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to create or modify condition records. Check the user roles and profiles.
  
  
  
  Verify Configuration:
  
  Review the configuration of the pricing procedure and condition types in transaction SPRO. Ensure that everything is set up correctly and that there are no inconsistencies.
  
  
  
  Check for Locks:
  
  Use transaction SM12 to check for any locks on the database that might be preventing number assignment. If there are locks, investigate and resolve them.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify where the error occurs. This may require technical expertise.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that might address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Contact SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error and the steps you have taken to troubleshoot.
  
  
  
  Related Information
  
  
  Transaction Codes: 
  
  SNRO - Number Range Objects
  SPRO - Customizing Implementation Guide
  SM12 - Display and Delete Locks
  SE11 - Data Dictionary (to check table structures)
  
  
  
  Documentation: Review SAP documentation related to pricing and condition records for additional insights into configuration and troubleshooting.
  
  
  By following these steps, you should be able to identify and resolve the MN304 error in SAP.