How To Fix MC024 - Foreign key field &-& not from table & (see long text)


SAP Error Message - Details

  • Message type: E = Error

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

  • Message number: 024

  • Message text: Foreign key field &-& not from table & (see long text)

  • Show details Hide details
  • What causes this issue?

    Partial foreign key relationships and foreign keys with system fields
    are not supported.

    How to fix this error?

    Complete the partial foreign key relationships or remove the reference
    to system fields. Otherwise the tables cannot be used in matchcodes.

    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message MC024 - Foreign key field &-& not from table & (see long text) ?

    The SAP error message MC024 indicates that there is a foreign key constraint violation in the context of a data entry or data processing operation. Specifically, the message states that a foreign key field (denoted by &-&) does not reference a valid entry in the specified table (&). This typically occurs when you are trying to enter or update data in a table that has a foreign key relationship with another table, and the value you are trying to enter does not exist in the referenced table.

    Cause:

    1. Invalid Foreign Key Value: The value you are trying to enter in the foreign key field does not exist in the primary table that it references.
    2. Data Integrity Issues: There may be issues with data integrity, such as missing or deleted records in the primary table.
    3. Configuration Issues: The foreign key relationship may not be correctly configured in the database schema.
    4. User Input Error: The user may have entered an incorrect value or made a typographical error.

    Solution:

    1. Check the Foreign Key Value: Verify that the value you are trying to enter in the foreign key field exists in the referenced table. You can do this by querying the table directly.
    2. Correct the Input: If the value is incorrect, correct it to a valid entry that exists in the primary table.
    3. Data Consistency Check: If you suspect data integrity issues, perform a consistency check on the database to identify any orphaned records or inconsistencies.
    4. Review Configuration: Ensure that the foreign key relationships are correctly defined in the database schema. This may involve checking the table definitions and constraints.
    5. Consult Documentation: Refer to the SAP documentation or help resources for more specific guidance related to the tables and fields involved in the error.

    Related Information:

    • Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary) to check table definitions or SE16 (Data Browser) to view table contents.
    • Debugging: If you have access to debugging tools, you can trace the program or transaction that is generating the error to understand the context better.
    • SAP Notes: Check SAP Notes for any known issues or patches related to the error message MC024.
    • User Authorization: Ensure that the user has the necessary authorizations to access and modify the relevant tables.

    By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.

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