How To Fix CN310 - A residence time has been entered for network type &1 - cannot delete

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 310

• Message text: A residence time has been entered for network type &1 - cannot delete

What causes this issue?

A residence time of &v2& months has been eneterd for network type &v1&.

System Response

You cannot delete network activities and networks that have been
released.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN310 - A residence time has been entered for network type &1 - cannot delete ?

  The SAP error message CN310 indicates that there is an issue with trying to delete a network in the Project System (PS) module. Specifically, the error states that a residence time has been entered for the specified network type, which prevents the deletion of the network.
  Cause:
  The primary cause of this error is that the network you are trying to delete has a residence time associated with it. In SAP, residence time is a parameter that defines the duration for which a network is planned or scheduled. If this parameter is set, the system does not allow the deletion of the network to maintain data integrity and ensure that project planning is not disrupted.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Residence Time: Verify if there is indeed a residence time set for the network. You can do this by navigating to the network in question and checking its details.
  
  
  Remove Residence Time: If you determine that the residence time is not needed, you can remove it. This can typically be done in the network's detail screen:
  
  Go to the network in the Project System.
  Navigate to the "Basic Data" or "Scheduling" tab (depending on your version of SAP).
  Look for the field related to residence time and clear it.
  
  
  
  Delete the Network: Once the residence time has been removed, you should be able to delete the network without encountering the CN310 error.
  
  
  Check Dependencies: Ensure that there are no other dependencies or assignments related to the network that might prevent its deletion. This includes checking for any linked activities, orders, or other project elements.
  
  
  Consult Documentation: If you are unsure about the implications of removing the residence time or deleting the network, consult your project documentation or speak with a project manager or SAP consultant.
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CN22 (Change Network) or CN01 (Display Network) to access network details.
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or solutions related to this error.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to the network and its parameters.
  
  By following these steps, you should be able to resolve the CN310 error and successfully delete the network in question.