How To Fix 5T121 - Number range not for internal number assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: 5T - HR-FB messages which access TemSe

• Message number: 121

• Message text: Number range not for internal number assignment

What causes this issue?

An error occurred when function module NUMBER_GET_NEXT was accessed.
EXCEPTION FB_NR_NOT_INTERN was triggered.
The cause is unknown.

How to fix this error?

Look for a note on this error message in OSS. If you cannot find one,
take note of the above information and notify the SAP telephone service
of the problem.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 5T121 - Number range not for internal number assignment ?

  The SAP error message 5T121 indicates that a number range is not configured for internal number assignment. This typically occurs when you are trying to create a document or record that requires a number from a number range that is set up for external number assignment instead of internal.
  Cause:
  
  Number Range Configuration: The number range you are trying to use is configured for external number assignment. This means that the system expects the user to provide the number manually rather than generating it automatically.
  Incorrect Number Range Assignment: The document type or object you are trying to create may be linked to a number range that is not set up for internal assignment.
  Missing Configuration: The number range may not be properly defined in the system for the specific document type or object.
  
  Solution:
  
  
  Check Number Range Configuration:
  
  Go to transaction code SNRO (Number Range Objects).
  Find the relevant number range object associated with the document type you are working with.
  Check the configuration to see if it is set for internal or external number assignment.
  
  
  
  Change Number Range Settings:
  
  If you need internal number assignment, you may need to create a new number range or modify the existing one to allow for internal assignment.
  This can be done in transaction code SNRO or OBA7 (for financial documents) depending on the context.
  
  
  
  Assign the Correct Number Range:
  
  Ensure that the document type or object is assigned to the correct number range that allows for internal number assignment.
  This can be done in the configuration settings for the specific module (e.g., Sales and Distribution, Finance, etc.).
  
  
  
  Consult with Basis or Configuration Team:
  
  If you do not have the necessary permissions to change number range settings, consult with your SAP Basis or configuration team to make the required changes.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SNRO: Number Range Objects
  OBA7: Number Range Maintenance for Financial Documents
  OBD2: Assign Number Ranges to Document Types (for FI)
  
  
  
  Documentation: Refer to SAP Help documentation for detailed steps on configuring number ranges and understanding the implications of internal vs. external number assignment.
  
  
  Testing: After making changes, test the document creation process to ensure that the error is resolved and that the system is generating numbers as expected.
  
  
  By following these steps, you should be able to resolve the error message 5T121 and ensure that your number range is correctly configured for internal number assignment.