How To Fix /STTPEC/MC_MD173 - NCode and NCode Type not unique in the system, update not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /STTPEC/MC_MD -

• Message number: 173

• Message text: NCode and NCode Type not unique in the system, update not possible

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /STTPEC/MC_MD173 - NCode and NCode Type not unique in the system, update not possible ?

  The SAP error message /STTPEC/MC_MD173 indicates that there is a problem with the uniqueness of the NCode and NCode Type in the system. This typically occurs in the context of Master Data Management or Material Master data, where the system expects a unique combination of these fields for processing.
  Cause:
  
  Duplicate Entries: The most common cause of this error is that there are duplicate entries for the specified NCode and NCode Type in the database. This can happen due to incorrect data entry, data migration issues, or system inconsistencies.
  Configuration Issues: There may be configuration settings that are not properly set up, leading to conflicts in how NCodes are defined or managed.
  Data Integrity Issues: If there are inconsistencies in the data, such as missing or incorrect relationships between master data records, this can lead to this error.
  
  Solution:
  
  
  Check for Duplicates: 
  
  Use transaction codes like SE16 or SE11 to check the relevant database tables for duplicate entries of the NCode and NCode Type.
  Identify and resolve any duplicates by either deleting or merging records as appropriate.
  
  
  
  Data Cleanup: 
  
  If duplicates are found, you may need to clean up the data. This could involve deleting unnecessary records or correcting the data to ensure that each NCode and NCode Type combination is unique.
  
  
  
  Review Configuration: 
  
  Check the configuration settings related to NCodes and NCode Types in the relevant customizing transactions (e.g., SPRO).
  Ensure that the settings are correctly defined to prevent duplicates from being created in the future.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or notes related to this error message for any specific guidance or patches that may address the issue.
  
  
  
  Testing: 
  
  After making changes, perform tests to ensure that the error no longer occurs and that the system behaves as expected.
  
  
  
  Contact SAP Support: 
  
  If the issue persists after attempting the above solutions, consider reaching out to SAP support for further assistance. They may provide additional insights or solutions based on the specific context of your system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE16 (Data Browser), SE11 (Data Dictionary), and SPRO (Customizing).
  SAP Notes: Search for SAP Notes related to the error message for any known issues or patches.
  Master Data Management: Understanding the principles of Master Data Management in SAP can help in diagnosing and resolving issues related to data integrity and uniqueness.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.