How To Fix CN155 - Network &1 does not belong to controlling area &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 155

• Message text: Network &1 does not belong to controlling area &2

What causes this issue?

Network &v1& does not belong to controlling area &v2&. Instead, the
network is assigned to controlling area &v3&.

How to fix this error?

Check whether the controlling area that you entered or that the system
determined is correct. If necessary change the entry or enter a network
that belongs to controlling area &V2&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN155 - Network &1 does not belong to controlling area &2 ?

  The SAP error message CN155 indicates that there is a mismatch between the network and the controlling area in the context of project systems or controlling (CO) modules. Specifically, it means that the network you are trying to work with is not assigned to the controlling area you are currently using.
  Cause:
  
  Network Assignment: The network you are trying to access is assigned to a different controlling area than the one you are currently working in.
  Configuration Issues: There may be configuration issues in the project system settings or controlling area settings.
  Data Entry Errors: Incorrect data entry when creating or modifying the network or project.
  
  Solution:
  
  
  Check Network Assignment:
  
  Go to the network in question and check its assignment to the controlling area. You can do this by navigating to the network in the Project System (PS) module and reviewing its details.
  Ensure that the network is assigned to the correct controlling area that you are currently using.
  
  
  
  Change Controlling Area:
  
  If you need to work with the network in a different controlling area, you may need to change your session or transaction to the correct controlling area where the network is assigned.
  
  
  
  Create a New Network:
  
  If the network needs to be created in the desired controlling area, you may need to create a new network that is specifically assigned to that controlling area.
  
  
  
  Consult Configuration:
  
  If you suspect a configuration issue, consult with your SAP Basis or configuration team to ensure that the controlling area and project system settings are correctly configured.
  
  
  
  Check Authorization:
  
  Ensure that you have the necessary authorizations to access the network and the controlling area.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CN21 (Create Network) or CN22 (Change Network) to manage networks.
  Project System (PS) Module: This error is commonly encountered in the Project System module, which integrates with Controlling (CO) for cost tracking and management.
  Documentation: Refer to SAP Help documentation for detailed information on network and controlling area assignments.
  
  If the issue persists after checking these aspects, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any known issues or patches related to this error.