How To Fix MFLE_TOOLS158 - Duplicates of MATNR_EXT_TEMP within MATERIALID_TEMP.

SAP Error Message - Details

• Message type: E = Error

• Message class: MFLE_TOOLS - Msg Type for MFLE_TOOLS

• Message number: 158

• Message text: Duplicates of MATNR_EXT_TEMP within MATERIALID_TEMP.

What causes this issue?

Duplicate within MATERIALID_TEMP found

System Response

Conversion of long material numbers not possible

How to fix this error?

Please check why there is a duplicate within the MATERIALID_TEMP
(MANDT and MATNR_EXT_TEMP) and correct it to continue with the
conversion.

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 MFLE_TOOLS158 - Duplicates of MATNR_EXT_TEMP within MATERIALID_TEMP. ?

  The SAP error message MFLE_TOOLS158 indicates that there are duplicate entries for the material number (MATNR) in the temporary table MATERIALID_TEMP. This typically occurs during data uploads or migrations when the system encounters multiple records with the same material number, which violates the uniqueness constraint expected by the system.
  Cause:
  
  Data Duplication: The most common cause is that the data being uploaded or processed contains duplicate entries for the same material number.
  Incorrect Data Preparation: If the data was not properly cleaned or validated before the upload, it may contain duplicates.
  Multiple Sources: If data is being aggregated from multiple sources, there may be overlaps that lead to duplicates.
  
  Solution:
  
  
  Identify Duplicates: 
  
  Review the data being uploaded to identify where the duplicates are occurring. You can use tools like Excel or SQL queries to find duplicate entries based on the material number.
  
  
  
  Data Cleaning:
  
  Remove or consolidate duplicate entries in the source data. Ensure that each material number is unique before attempting the upload again.
  
  
  
  Validation:
  
  Implement validation checks in your data preparation process to catch duplicates before they reach the upload stage.
  
  
  
  Use of Unique Identifiers:
  
  If applicable, consider using unique identifiers or keys that can help distinguish between different records that may have the same material number.
  
  
  
  Re-attempt Upload:
  
  After cleaning the data, re-attempt the upload process to see if the error persists.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific error message for any patches or updates that may address the issue.
  Data Migration Tools: If you are using tools like SAP Data Services or LSMW (Legacy System Migration Workbench), ensure that the mapping and transformation rules are correctly set to avoid duplicates.
  Testing: Always test the upload process in a development or quality assurance environment before executing it in production to catch any issues early.
  
  By following these steps, you should be able to resolve the MFLE_TOOLS158 error and successfully upload your material data without duplicates.