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How To Fix SEPM_EXCEPTIONS052 - Field '&1' is not a key field


SAP Error Message - Details

  • Message type: E = Error

  • Message class: SEPM_EXCEPTIONS - EPM: Exception Messages

  • Message number: 052

  • Message text: Field '&1' is not a key field

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  • 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.



    What else can you do?

    First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

    Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

    You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.


Smart SAP Assistant

  • What is the cause and solution for SAP error message SEPM_EXCEPTIONS052 - Field '&1' is not a key field ?

    The SAP error message SEPM_EXCEPTIONS052, which states "Field '&1' is not a key field," typically occurs in the context of SAP's data modeling or when working with the SAP HANA database. This error indicates that a field you are trying to use as a key field in a data model or a query is not defined as a key field in the underlying data structure.

    Cause:

    1. Field Definition: The field you are trying to use is not defined as a key field in the database table or data model. Key fields are essential for uniquely identifying records in a table.
    2. Data Model Configuration: If you are working with a data model (like an InfoObject in BW or a CDS view), the field may not be included in the key fields of that model.
    3. Query Design: In query design, if you attempt to use a non-key field in a context that requires a key field (like in certain aggregations or joins), this error can occur.

    Solution:

    1. Check Field Definition: Verify the definition of the field in the underlying database table or data model. Ensure that the field is indeed defined as a key field if it is intended to be used as such.
    2. Modify Data Model: If you have the necessary permissions, you may need to modify the data model to include the field as a key field. This can involve:
      • Editing the InfoObject in BW.
      • Adjusting the CDS view definition to include the field in the key.
    3. Adjust Query: If you are working in a query designer, ensure that you are using the correct key fields as defined in the data model. Replace the non-key field with an appropriate key field.
    4. Consult Documentation: Review SAP documentation or help resources related to the specific data model or query you are working with for additional guidance.

    Related Information:

    • Key Fields: Key fields are crucial in database design as they ensure the uniqueness of records. In SAP, key fields are often used in various contexts, including database tables, data models, and queries.
    • SAP HANA: If you are using SAP HANA, understanding how key fields are defined in HANA models (like calculation views) is essential.
    • SAP Notes: Check for any relevant SAP Notes or updates that might address this error or provide additional context.

    If the issue persists after checking these aspects, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.

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