How To Fix CN055 - Network does not exist (check entry)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 055

• Message text: Network does not exist (check entry)

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CN055 - Network does not exist (check entry) ?

  The SAP error message CN055 ("Network does not exist (check entry)") typically occurs in the context of project management or network planning within the SAP system, particularly when working with the Project System (PS) module. This error indicates that the system cannot find the specified network in the database, which can happen for several reasons.
  Causes:
  
  Incorrect Network Number: The network number entered may be incorrect or does not exist in the system.
  Network Deletion: The network may have been deleted or archived, making it unavailable for the current transaction.
  Authorization Issues: The user may not have the necessary authorizations to view or access the network.
  Data Consistency Issues: There may be inconsistencies in the database or issues with the data transport that could lead to the network not being recognized.
  Incorrect Project Definition: The network might not be correctly assigned to the project definition or may not belong to the project you are working on.
  
  Solutions:
  
  Verify Network Number: Double-check the network number you are entering to ensure it is correct. You can use transaction codes like CN21 (Create Network) or CN22 (Change Network) to search for the network.
  Check Network Status: Ensure that the network is active and has not been deleted or archived. You can check this in the network overview.
  Authorization Check: Ensure that you have the necessary authorizations to access the network. You may need to contact your SAP security administrator to verify your permissions.
  Use the Correct Project Definition: Make sure that the network is correctly assigned to the project definition you are working with. You can check this in the project structure.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your IT support team or SAP Basis team to check for any underlying database issues or inconsistencies.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN01 (Display Network), CJ20N (Project Builder), and CN21/CN22 for creating and changing networks.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP documentation related to Project System and network management for best practices and troubleshooting steps.
  
  By following these steps, you should be able to identify the cause of the CN055 error and take appropriate action to resolve it.