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How To Fix MC067 - Foreign key & after & is not a key extension


SAP Error Message - Details

  • Message type: E = Error

  • Message class: MC - Aggregate: views, matchcodes, lock objects

  • Message number: 067

  • Message text: Foreign key & after & is not a key extension

  • Show details Hide details
  • What causes this issue?

    For performance reasons, synchronous maintenance of matchcodes from the
    database interface of the SAP System is subject to certain
    restrictions which the system checks when update type 'S' is selected
    for a matchcode ID. For example, a matchcode ID that is to be
    maintained synchronously may contain only tables that are
    <LS>hierarchically</> dependent on one another. Table A is hierarchally
    dependent on table B if the key of A forms a prefix to the key of B,
    that is, fields are simply added to the key of the referenced table in
    the dependent table (it is also possible for both tables to have the
    same key).
    <LS>Example</>:

    The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

    The key of table A consists of the fields K1 and K2. In this case,
    table B, which is dependent on table A, can only be included in the
    matchcode ID if the key of B starts with K1 and K2.

    System Response

    The system checks the restrictions described here and issues an
    appropriate error message.

    How to fix this error?

    Include only those matchcode object tables in the matchcode ID which
    do not violate the restrictions or check your relationship definitions.

    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message MC067 - Foreign key & after & is not a key extension ?

    The SAP error message MC067, which states "Foreign key & after & is not a key extension," typically occurs in the context of Material Master data or when dealing with the configuration of foreign key relationships in SAP. This error indicates that there is an issue with the foreign key relationship defined in the system, specifically that the foreign key you are trying to use is not recognized as a valid key extension.

    Cause:

    1. Incorrect Foreign Key Definition: The foreign key you are trying to reference may not be defined correctly in the system.
    2. Missing Key Extension: The key extension that you are trying to use may not exist or is not properly configured in the system.
    3. Data Inconsistency: There may be inconsistencies in the data that prevent the foreign key from being recognized.
    4. Configuration Issues: The configuration settings for the relevant tables or fields may not be set up correctly.

    Solution:

    1. Check Foreign Key Configuration:

      • Go to the relevant configuration settings in SAP (usually in the IMG under Logistics or Material Management).
      • Verify that the foreign key is correctly defined and that it points to a valid key extension.
    2. Review Data:

      • Check the data in the relevant tables to ensure that the foreign key values are present and correctly formatted.
      • Look for any inconsistencies or missing entries that could be causing the error.
    3. Adjust Key Extensions:

      • If the key extension is missing, you may need to create it or adjust the existing configuration to include the necessary key extensions.
    4. Consult Documentation:

      • Refer to SAP documentation or help resources for specific guidance on configuring foreign keys and key extensions.
    5. Testing:

      • After making changes, test the configuration to ensure that the error no longer occurs.
    6. Seek Help from SAP Support:

      • If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more detailed assistance.

    Related Information:

    • Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE14 (Database Utility), or SPRO (IMG) to access the relevant configuration settings.
    • SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific fixes or patches.
    • Community Forums: SAP Community and other forums can be helpful for finding similar issues and solutions shared by other users.

    By following these steps, you should be able to identify and resolve the cause of the MC067 error in your SAP system.

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