How To Fix MPE_INSTALLATION_MSG027 - A network activity with reference point has no components assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: MPE_INSTALLATION_MSG -

• Message number: 027

• Message text: A network activity with reference point has no components assigned

What causes this issue?

The network was copied from an earlier project, but the current project
does not require the network activity, the BOM item has the wrong or no
reference point, or the BOM item is missing.

System Response

Reference points are used to assign BOM items to network activities. By
creating a network activity with a reference point, you indicate that
you expect a BOM item to be assigned to the network activity.

How to fix this error?

If the network activity is not required, delete the activity in this app
or by using transaction <AB>CJ20N</>.
If the activity should have a component assigned, update the reference
point in the BOM or create a new BOM item in the <LS>Manage Bill of
Material</> app.
Subsequently re-explode the current BOM version.

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 MPE_INSTALLATION_MSG027 - A network activity with reference point has no components assigned ?

  The SAP error message MPE_INSTALLATION_MSG027 indicates that there is a network activity in your project that has no components assigned to it. This typically occurs in the context of project management or network planning within SAP, particularly in modules like SAP PS (Project System) or SAP PM (Plant Maintenance).
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Assignments: The network activity has been created, but no components (like materials, resources, or activities) have been assigned to it.
  Incorrect Configuration: There may be a configuration issue in the project or network settings that prevents the assignment of components.
  Data Inconsistencies: There might be inconsistencies in the data that lead to the inability to assign components to the network activity.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Network Activity:
  
  Go to the network activity in question and verify if it has been properly defined.
  Ensure that the activity type is appropriate for the components you are trying to assign.
  
  
  
  Assign Components:
  
  If components are missing, you need to assign the necessary components (like materials, resources, or activities) to the network activity.
  You can do this by navigating to the network activity in the SAP GUI and using the appropriate transaction (e.g., CN21 for creating networks or CN22 for changing networks).
  
  
  
  Review Configuration:
  
  Check the configuration settings for the project or network to ensure that they allow for component assignments.
  You may need to consult with your SAP configuration team if you suspect a configuration issue.
  
  
  
  Data Consistency Check:
  
  Run any relevant data consistency checks to identify and resolve any underlying data issues that may be causing the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed guidance on managing network activities and component assignments.
  
  
  
  Contact Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21, CN22, CJ20N (Project Builder), and CNE1 (Network Overview).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that you have the necessary authorizations to make changes to network activities and assignments.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.