How To Fix CJ548 - Select a network first

SAP Error Message - Details

• Message type: E = Error

• Message class: CJ - Project master data and structure

• Message number: 548

• Message text: Select a network first

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CJ548 - Select a network first ?

  The SAP error message CJ548: "Select a network first" typically occurs in the context of project management within SAP, particularly when working with networks in Project System (PS) module. This error indicates that the system expects you to select a network before performing a specific action, such as creating or modifying activities, assigning resources, or entering costs.
  Cause:
  
  No Network Selected: The most common cause of this error is that the user has not selected a network in the project structure before attempting to perform an action that requires a network context.
  Incorrect Navigation: The user may be in a transaction or screen that requires a network to be selected, but they have navigated to it without first selecting a valid network.
  Authorization Issues: In some cases, the user may not have the necessary authorizations to view or select networks, leading to this error.
  
  Solution:
  
  Select a Network: Ensure that you have selected a valid network in the project structure. You can do this by navigating to the appropriate project or network in the Project Builder (CJ20N) or Network Overview (CN21) transactions.
  Check Navigation Path: Make sure you are following the correct navigation path to access the network. If you are in a transaction that requires a network, go back and select the network first.
  Authorization Check: If you believe you should have access to the network but still encounter this error, check with your SAP administrator to ensure you have the necessary authorizations to view and select networks.
  Use the Correct Transaction: If you are trying to perform a specific action, ensure you are using the correct transaction code that allows for network selection.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  CJ20N: Project Builder
  CN21: Create Network
  CN22: Change Network
  CN23: Display Network
  
  
  SAP Documentation: Refer to SAP Help documentation for detailed information on Project System functionalities and network management.
  User Training: If you are new to SAP Project System, consider undergoing training or reviewing user manuals to better understand how to navigate and manage projects and networks.
  
  By following these steps, you should be able to resolve the CJ548 error and proceed with your project management tasks in SAP.