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How To Fix DT130 - Only use namespaces CL_ and IF_ for classes and interfaces


SAP Error Message - Details

  • Message type: E = Error

  • Message class: DT - Table activation (incl. indexes)

  • Message number: 130

  • Message text: Only use namespaces CL_ and IF_ for classes and interfaces

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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?

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    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 DT130 - Only use namespaces CL_ and IF_ for classes and interfaces ?

    The SAP error message DT130 indicates that you are trying to create or use a class or interface that does not adhere to the naming conventions enforced by the SAP system. Specifically, it states that only namespaces starting with CL_ for classes and IF_ for interfaces are allowed.

    Cause:

    1. Incorrect Naming Convention: The class or interface you are trying to create or use does not start with the required prefixes (CL_ for classes and IF_ for interfaces).
    2. Legacy Code: If you are working with older code or third-party code, it may not follow the current naming conventions.
    3. Custom Development: If you are developing custom classes or interfaces, you may have inadvertently named them incorrectly.

    Solution:

    1. Rename Classes/Interfaces: Ensure that all your classes start with CL_ and all interfaces start with IF_. For example:

      • Change MyClass to CL_MyClass
      • Change MyInterface to IF_MyInterface
    2. Check Existing Code: If you are modifying existing code, check for any classes or interfaces that do not follow the naming convention and rename them accordingly.

    3. Use the Correct Namespace: If you are working in a specific namespace, ensure that your classes and interfaces are defined within that namespace and follow the naming conventions.

    4. Review SAP Documentation: Refer to the SAP documentation for guidelines on naming conventions and best practices for ABAP development.

    Related Information:

    • ABAP Naming Conventions: SAP has specific naming conventions for various objects in ABAP. Familiarizing yourself with these conventions can help avoid similar errors in the future.
    • Namespace Management: In SAP, namespaces are used to avoid naming conflicts. Ensure that you are using the correct namespace for your development objects.
    • Development Guidelines: SAP provides guidelines for ABAP development, which include naming conventions, performance considerations, and best practices.

    By following these steps, you should be able to resolve the DT130 error and ensure that your classes and interfaces comply with SAP's naming conventions.

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