How To Fix COM_PRODUCT512 - A key was used twice for multirow set type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PRODUCT - General Messages on Products

• Message number: 512

• Message text: A key was used twice for multirow set type &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PRODUCT512 - A key was used twice for multirow set type &1 ?

  The SAP error message COM_PRODUCT512 indicates that a key was used multiple times in a multi-row set type, which is not allowed. This typically occurs in scenarios where you are working with data that is expected to be unique, such as in product master data or configuration settings.
  Cause:
  The error is caused by the following:
  
  Duplicate Keys: The same key (e.g., product ID, material number) is being referenced more than once in a multi-row data structure.
  Data Entry Errors: During data entry or data import, the same key might have been inadvertently entered multiple times.
  Configuration Issues: There may be issues in the configuration of the data model or the way the data is being processed.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Identify Duplicates:
  
  Check the data you are trying to process for duplicate entries. This can often be done using a simple query or by reviewing the data in a spreadsheet.
  If you are importing data, ensure that the source file does not contain duplicate keys.
  
  
  
  Remove Duplicates:
  
  If duplicates are found, remove or correct them so that each key is unique within the multi-row set.
  
  
  
  Review Data Processing Logic:
  
  If you are using custom code or a specific transaction, review the logic to ensure that it correctly handles unique keys and does not allow duplicates to be processed.
  
  
  
  Test Changes:
  
  After making the necessary corrections, re-run the process to ensure that the error no longer occurs.
  
  
  
  Consult Documentation:
  
  If you are unsure about the specific multi-row set type mentioned in the error message, consult the SAP documentation or help resources for more details on the expected structure and constraints.
  
  
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using transaction codes like MM01 (Create Material), MM02 (Change Material), or others related to product management.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists after following the above steps, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify and resolve the cause of the COM_PRODUCT512 error in your SAP system.