How To Fix BM102 - Language-dependent key & is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: BM - Development class BZME - units of measure

• Message number: 102

• Message text: Language-dependent key & is not unique

What causes this issue?

Both the commercial (3-char.) and the technical (6-char.) unit names
must be unique per language.
You have translated a &V2&-char name with the text &V1&. This text is
already used as the name of another unit.

System Response

The translation can not be saved, because otherwise an
inconsistent data set would result.

How to fix this error?

Please check the translation and change the &V2&-char
translation for one of the following entries:
,,&V3&
,,&V4&

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BM102 - Language-dependent key & is not unique ?

  The SAP error message BM102, which states "Language-dependent key & is not unique," typically occurs when there is a conflict in the database regarding language-dependent data. This error indicates that the system has found multiple entries for a key that should be unique in a specific language context.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries in a table that is supposed to have unique language-dependent keys. This can happen if data was incorrectly imported or if there were manual entries that were not properly validated.
  Incorrect Configuration: Sometimes, the configuration settings for language-dependent fields may not be set up correctly, leading to conflicts.
  Data Migration Issues: If data has been migrated from another system, it may not have been cleaned up properly, resulting in duplicates.
  
  Solution:
  
  Identify Duplicates: Use transaction codes like SE16 or SE11 to check the relevant database table for duplicate entries. You can filter by the language key to find duplicates.
  Data Cleanup: Once duplicates are identified, you will need to decide which entries to keep and which to delete. This may involve consulting with business stakeholders to ensure that the correct data is retained.
  Adjust Configuration: If the issue is related to configuration, review the settings for the relevant language-dependent fields and ensure they are set up correctly.
  Data Validation: Implement data validation checks to prevent future duplicates from being created. This can include setting up unique constraints in the database or adding validation rules in the application layer.
  Re-import Data: If the issue arose from a data import, consider re-importing the data after cleaning it up to ensure that no duplicates are present.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE16 (Data Browser) and SE11 (Data Dictionary) to analyze the database tables.
  Tables Involved: Identify which specific tables are involved in the error. Common tables that might be affected include those related to material master data, customer/vendor master data, etc.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that no new issues have been introduced.
  
  By following these steps, you should be able to resolve the BM102 error and prevent it from occurring in the future.