How To Fix APB_FPM_CORE389 - Wire Model cannot not be resolved, since Source UIBB & belongs to a loop

SAP Error Message - Details

• Message type: E = Error

• Message class: APB_FPM_CORE - FPM messages

• Message number: 389

• Message text: Wire Model cannot not be resolved, since Source UIBB & belongs to a loop

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message APB_FPM_CORE389 - Wire Model cannot not be resolved, since Source UIBB & belongs to a loop ?

  The SAP error message APB_FPM_CORE389 indicates that there is an issue with the configuration of the Floorplan Manager (FPM) application, specifically related to the Wire Model. This error typically arises when there is a circular reference or a loop in the configuration of the User Interface Building Blocks (UIBBs) in your FPM application.
  Cause:
  
  Circular Reference: The most common cause of this error is that one or more UIBBs are referencing each other in a way that creates a loop. For example, UIBB A might be trying to access data from UIBB B, while UIBB B is also trying to access data from UIBB A.
  Incorrect Configuration: There may be an incorrect configuration in the FPM application, such as improper settings in the wire model or the data binding between UIBBs.
  Missing or Misconfigured Data Sources: If the data sources for the UIBBs are not properly defined or are missing, it can lead to this error.
  
  Solution:
  
  Check UIBB Configuration: Review the configuration of the UIBBs involved in the wire model. Ensure that there are no circular references. You can do this by checking the data binding and the source UIBBs for each component.
  Modify Wire Model: If you identify a loop, you will need to modify the wire model to eliminate the circular reference. This may involve changing the data flow or the way UIBBs are connected.
  Use Debugging Tools: Utilize the debugging tools available in the SAP FPM environment to trace the data flow and identify where the loop is occurring.
  Consult Documentation: Refer to the SAP documentation for FPM and the specific UIBBs you are using to ensure that they are configured correctly.
  Testing: After making changes, test the application thoroughly to ensure that the error is resolved and that the application behaves as expected.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for configuring UIBBs and wire models.
  FPM Documentation: Review the official SAP documentation on Floorplan Manager and the specific UIBBs you are using to understand their configuration and data binding requirements.
  Community Forums: Consider reaching out to SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to resolve the APB_FPM_CORE389 error and ensure that your FPM application functions correctly.