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How To Fix SWDP_WB_TOOL235 - &1 is independent. Property "Singleton" cannot be deactivated


SAP Error Message - Details

  • Message type: E = Error

  • Message class: SWDP_WB_TOOL - Web Dynpro: Messages for Workbench Tools

  • Message number: 235

  • Message text: &1 is independent. Property "Singleton" cannot be deactivated

  • Show details Hide details
  • What causes this issue?

    You want to switch off the "Singleton" property of the node &V1& &V1&,
    hnowever, is a direct subnode of the root node of the context - that is,
    an independent node.

    System Response

    The system reject the switching off function.

    How to fix this error?

    Independent nodes must have the "Singleton" property.

    Procedure for System Administrators

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


    Error message extract from SAP system. Copyright SAP SE.


Smart SAP Assistant

  • What is the cause and solution for SAP error message SWDP_WB_TOOL235 - &1 is independent. Property "Singleton" cannot be deactivated ?

    The SAP error message SWDP_WB_TOOL235 indicates that you are trying to deactivate the "Singleton" property of a component in the SAP Web Dynpro application, but the component is defined as independent. In Web Dynpro, a "Singleton" component is one that is instantiated only once during the application lifecycle, while an "Independent" component can have multiple instances.

    Cause:

    The error occurs because:

    • The component you are trying to modify is marked as "Independent," which means it can have multiple instances.
    • The "Singleton" property is not applicable to independent components, as they are designed to allow multiple instances to exist simultaneously.

    Solution:

    To resolve this error, you have a couple of options:

    1. Keep the Singleton Property: If the component is intended to be a Singleton, you should keep the "Singleton" property activated. This means you should not attempt to deactivate it.

    2. Change Component Type: If you need the component to be independent and allow multiple instances, you should:

      • Change the component's definition to remove the Singleton property.
      • Ensure that the component's design and logic can handle multiple instances without conflicts.
    3. Review Component Usage: Check how the component is being used in your application. If it is being used in a way that requires it to be a Singleton, you may need to refactor your application logic to accommodate this.

    Related Information:

    • Web Dynpro Component Properties: Familiarize yourself with the properties of Web Dynpro components, especially the implications of Singleton and Independent settings.
    • SAP Documentation: Refer to the official SAP documentation for Web Dynpro to understand the lifecycle of components and best practices for component design.
    • Debugging: If you are unsure about the component's usage, consider debugging the application to see how instances are being created and managed.

    By following these steps, you should be able to resolve the error and ensure that your Web Dynpro application functions as intended.

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