How To Fix BM106 - The table T006A contains duplicate keys

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 106

• Message text: The table T006A contains duplicate keys

What causes this issue?

Table T006A contains double language-specific keys.

System Response

Double language-specific keys can lead to errors and terminations in
application programs.

How to fix this error?

Leave the application. Start the report RBZMECHK. This report cleans up
table T006A.
Start your application again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BM106 - The table T006A contains duplicate keys ?

  The SAP error message BM106 indicates that there are duplicate keys in the table T006A, which is used for storing unit of measure (UoM) information. This error typically arises during data entry or when trying to activate or transport data that involves this table.
  Cause:
  The primary cause of the BM106 error is the presence of duplicate entries in the T006A table. This can happen due to:
  
  Data Import Issues: If data is imported into the system (e.g., through LSMW, BAPIs, or other data migration tools) and the source data contains duplicates, this can lead to conflicts.
  Manual Data Entry: Users may inadvertently create duplicate entries when entering data manually.
  System Bugs or Inconsistencies: Sometimes, bugs or inconsistencies in the system can lead to duplicate entries being created.
  
  Solution:
  To resolve the BM106 error, you can follow these steps:
  
  
  Identify Duplicates:
  
  Use transaction code SE11 (Data Dictionary) or SE16 (Data Browser) to view the T006A table.
  Execute a query to find duplicate entries based on the key fields (usually the unit of measure and the language key).
  
  Example SQL query to find duplicates:
  SELECT MSEHI, SPRAS, COUNT(*)
  FROM T006A
  GROUP BY MSEHI, SPRAS
  HAVING COUNT(*) > 1
  
  
  Remove or Correct Duplicates:
  
  Once you identify the duplicates, you can either delete or correct them. Ensure that you have a backup of the data before making any changes.
  Use transaction code SE14 (Database Utility) to delete or adjust the entries if necessary.
  
  
  
  Check Data Import Processes:
  
  If the duplicates were caused by a data import, review the import process to ensure that it includes checks for existing entries before inserting new ones.
  
  
  
  Consult Documentation:
  
  Review SAP notes or documentation related to the T006A table and the specific error message for any additional guidance or known issues.
  
  
  
  Testing:
  
  After making corrections, test the process that triggered the error to ensure that it no longer occurs.
  
  
  
  Related Information:
  
  Table T006A: This table contains the unit of measure data, including the unit of measure key (MSEHI) and the language key (SPRAS).
  Transaction Codes: SE11 (Data Dictionary), SE16 (Data Browser), SE14 (Database Utility).
  SAP Notes: Check the SAP Support Portal for any relevant notes that may address this specific error or provide additional troubleshooting steps.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or technical team for further investigation.