How To Fix BIL120 - The combination of basic rate &1 and fact group &2 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: BIL - General billing

• Message number: 120

• Message text: The combination of basic rate &1 and fact group &2 already exists

What causes this issue?

In the billing schema extension for a schema, any combination of basic
rate and fact group may only occur once. However, the combination of
basic rate &V1& and fact group &V2& already exists in rate relationship
group &V3&. This is not permitted.

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?

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 BIL120 - The combination of basic rate &1 and fact group &2 already exists ?

  The SAP error message BIL120 indicates that there is a conflict in the billing configuration where a combination of a basic rate and a fact group already exists in the system. This typically occurs in the context of billing or invoicing processes, particularly when setting up or modifying billing rates.
  Cause:
  
  Duplicate Entry: The most common cause of this error is that there is already an existing entry in the system for the specified combination of basic rate and fact group. This can happen if you are trying to create a new billing rate that matches an existing one.
  Configuration Error: There may be a misconfiguration in the billing setup, where the same basic rate is inadvertently linked to multiple fact groups or vice versa.
  Data Migration Issues: If data has been migrated from another system or if there have been recent changes to the billing configuration, it may lead to duplicate entries.
  
  Solution:
  
  Check Existing Entries: Review the existing billing rates and fact groups in the system. You can do this by navigating to the relevant configuration or transaction codes in SAP (e.g., using transaction codes like V/06 for pricing or V/08 for condition types).
  Modify or Delete Duplicates: If you find that the combination already exists, you can either modify the existing entry or delete it if it is no longer needed.
  Use Unique Combinations: When creating new billing rates, ensure that the combination of basic rate and fact group is unique. You may need to adjust either the basic rate or the fact group to avoid conflicts.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on setting up billing rates and fact groups to ensure compliance with best practices.
  Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for billing and pricing configuration, such as V/06, V/08, and V/01.
  SAP Notes: Check SAP Notes for any known issues or patches related to billing configuration that might address this error.
  User Roles and Permissions: Ensure that you have the necessary permissions to create or modify billing rates and fact groups in the system.
  
  By following these steps, you should be able to identify the cause of the BIL120 error and implement a solution to resolve it.