How To Fix GHO_NET033 - Network structure contains isolated objects

SAP Error Message - Details

• Message type: E = Error

• Message class: GHO_NET - Message class for Production Network Modelling

• Message number: 033

• Message text: Network structure contains isolated objects

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message GHO_NET033 - Network structure contains isolated objects ?

  The SAP error message GHO_NET033, which states "Network structure contains isolated objects," typically occurs in the context of project management or network planning within SAP, particularly in the Project System (PS) module. This error indicates that there are objects (such as activities or milestones) in a network that are not connected to any other objects, leading to an incomplete or inconsistent network structure.
  Cause:
  
  Isolated Activities: There are activities in the network that do not have any predecessor or successor relationships defined. This means they are not linked to the main flow of the project.
  Incorrect Network Configuration: The network might have been incorrectly configured, leading to some objects being left out of the main structure.
  Data Entry Errors: Manual errors during the creation or modification of the network can lead to isolated objects.
  Deleted Relationships: If relationships between activities were deleted without ensuring that all activities remain connected, this can result in isolated objects.
  
  Solution:
  
  Review Network Structure: Check the network structure to identify any isolated activities. You can do this by using transaction codes like CN41 (Network Overview) or CN22 (Change Network).
  Establish Relationships: For any isolated activities, establish the necessary predecessor and successor relationships to connect them to the network. This can be done by editing the activity details and linking them appropriately.
  Delete Isolated Objects: If the isolated objects are not needed, consider deleting them from the network to clean up the structure.
  Use Network Planning Tools: Utilize SAP's network planning tools to visualize the network and identify any disconnections more easily.
  Check for Errors in Data Entry: Ensure that all data entries are correct and that no relationships were inadvertently removed.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN01 (Create Network), CN02 (Change Network), and CN03 (Display Network) to manage network structures effectively.
  Documentation: Refer to SAP documentation or help files for detailed guidance on network planning and management.
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to this error message or provide patches and updates.
  Training: Consider training sessions or workshops on SAP Project System to better understand network structures and how to manage them effectively.
  
  By following these steps, you should be able to resolve the GHO_NET033 error and ensure that your network structure is complete and functional.