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How To Fix FL018 - Namespace delimiter '/' must be the first character


SAP Error Message - Details

  • Message type: E = Error

  • Message class: FL - Function Builder messages

  • Message number: 018

  • Message text: Namespace delimiter '/' must be the first character

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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.



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Smart SAP Assistant

  • What is the cause and solution for SAP error message FL018 - Namespace delimiter '/' must be the first character ?

    The SAP error message FL018 indicates that there is an issue with the namespace in your SAP system. Specifically, it states that the namespace delimiter '/' must be the first character in the namespace. This error typically occurs when you are trying to create or modify an object (like a function module, class, or other repository objects) and the namespace is not correctly formatted.

    Cause:

    1. Incorrect Namespace Format: The namespace you are trying to use does not start with the '/' character. In SAP, namespaces are used to differentiate between different development objects, especially in the context of ABAP development.
    2. Missing Namespace: If you are trying to create an object in a namespace that is not defined or does not exist, you may encounter this error.
    3. Typographical Error: There might be a simple typographical error in the namespace you are trying to use.

    Solution:

    1. Check Namespace: Ensure that the namespace you are using starts with the '/' character. For example, if your intended namespace is 'Z_MY_NAMESPACE', it should be formatted as '/Z_MY_NAMESPACE'.
    2. Create a Valid Namespace: If you are trying to create a new namespace, make sure to define it correctly in the SAP system. You can do this through transaction code SE03 (Transport Organizer Tools) or SE80 (Object Navigator).
    3. Use Standard Naming Conventions: Follow the standard naming conventions for namespaces in SAP. Typically, custom namespaces start with 'Z' or 'Y' followed by a '/'.
    4. Review Object Creation Process: If you are using a tool or a transaction to create objects, double-check the input fields to ensure that the namespace is correctly specified.

    Related Information:

    • Namespaces in SAP: Namespaces are used to avoid naming conflicts between different development objects. They help in organizing and managing objects in the SAP system.
    • Transaction Codes: Familiarize yourself with transaction codes like SE03 for managing transports and namespaces, and SE80 for object management.
    • SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions and namespace management.

    If you continue to face issues after checking the namespace format, consider reaching out to your SAP Basis or development team for further assistance.

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