How To Fix MH330 - This combination of characteristic values already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: MH - Maintain Material Master Data (Retail)

• Message number: 330

• Message text: This combination of characteristic values already exists

What causes this issue?

You have tried to create a new variant &V2& for generic material &V1&.
In doing so, the characteristic value for the variant-creating
characteristics is already used by variant &V3&.
Variant &V3& may be a variant that already exists in the database.
Variants &V2& and &V3& could be new variants that have the same
characteristic valuation.

System Response

Processing had to be cancelled as it could have lead to inconsistencies
in the classification data for the variants.

How to fix this error?

Check the data that has been transferred and select a combination of
characteristics that has not yet been used to create the new variants.
The characteristics combinations that have already been assigned for
the existing generic article can be displayed in the basic data view in
article master data maintenance (transaction MM43) using the 'Variants'
function.
If multiple variants are created at the same time, a different
characteristic variation for the variant-creating characteristics has
to be used for each variant.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MH330 - This combination of characteristic values already exists ?

  The SAP error message MH330, which states "This combination of characteristic values already exists," typically occurs in the context of variant configuration or when dealing with characteristics and their values in SAP. This error indicates that you are trying to create or save a configuration that has already been defined in the system.
  Cause:
  
  Duplicate Configuration: The specific combination of characteristic values you are trying to enter already exists in the system. This can happen if you are attempting to create a new configuration that is identical to an existing one.
  Incorrect Data Entry: There may be a mistake in the data entry process, leading to an attempt to create a duplicate entry.
  Master Data Issues: The master data for characteristics and their values may not be properly maintained, leading to conflicts.
  
  Solution:
  
  Check Existing Configurations: Review the existing configurations in the system to see if the combination of characteristic values you are trying to enter already exists. You can do this by navigating to the relevant transaction (e.g., CU50 for configuration) and searching for the existing configurations.
  Modify the Input: If you find that the combination already exists, you may need to modify your input to create a unique configuration. Change one or more characteristic values to ensure that the new combination is distinct.
  Review Characteristic Settings: Ensure that the characteristics and their values are correctly defined in the system. Check for any inconsistencies or errors in the master data.
  Consult Documentation: If you are unsure about the characteristics and their values, refer to the documentation or guidelines provided for the specific configuration you are working with.
  Error Handling in Custom Programs: If this error occurs in a custom program or transaction, review the code to ensure that it properly checks for existing combinations before attempting to create a new one.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CU01 (Create Characteristics), CU02 (Change Characteristics), and CU50 (Configuration).
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP Notes can provide additional context or solutions.
  User Authorization: Ensure that you have the necessary authorizations to create or modify configurations in the system.
  Training and Documentation: If you are new to variant configuration, consider undergoing training or reviewing SAP documentation to better understand how characteristics and values work.
  
  By following these steps, you should be able to resolve the MH330 error and successfully manage your configurations in SAP.