How To Fix CN778 - Enter network, activity and item

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 778

• Message text: Enter network, activity and item

What causes this issue?

To be able to assign a document to a material component, the system
requires the network and activity number, and the item from the
material component.

System Response

The document cannot be assigned.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN778 - Enter network, activity and item ?

  The SAP error message CN778 ("Enter network, activity and item") typically occurs in the context of project management and is related to the assignment of costs or resources to a specific network activity in a project. This error indicates that the system requires you to specify a network, activity, and item before proceeding with the action you are trying to perform.
  Cause:
  
  Missing Information: The most common cause of this error is that the user has not provided the necessary details (network, activity, and item) in the transaction or screen they are working on.
  Incorrect Transaction: The transaction being executed may not be appropriate for the current context, leading to the requirement for additional information.
  Configuration Issues: There may be configuration settings in the project system that require certain fields to be filled out before proceeding.
  
  Solution:
  
  
  Enter Required Information: 
  
  Navigate to the relevant screen where the error occurred.
  Ensure that you have entered the network number, activity number, and item number in the appropriate fields.
  If you are unsure of the values, you can use the search help (F4) to find the correct network and activity.
  
  
  
  Check Transaction Context: 
  
  Make sure you are in the correct transaction for the action you are trying to perform. If you are trying to assign costs or resources, ensure you are in the right module (e.g., CJ20N for project planning).
  
  
  
  Review Configuration: 
  
  If you have the necessary authorizations, check the configuration settings in the project system to ensure that the required fields are set up correctly.
  Consult with your SAP administrator or project manager if you suspect configuration issues.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or help files for the specific transaction you are using to understand the required fields and their significance.
  
  
  
  Seek Help from Colleagues: 
  
  If you are still unable to resolve the issue, consider reaching out to colleagues or your SAP support team for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Common transaction codes related to project management include CJ20N (Project Builder), CJ01 (Create Work Breakdown Structure), and CJ02 (Change Work Breakdown Structure).
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message CN778.
  User Roles and Authorizations: Ensure that you have the necessary roles and authorizations to perform the actions related to project management in SAP.
  
  By following these steps, you should be able to resolve the CN778 error and continue with your project management tasks in SAP.