How To Fix CNPOC_MSG_CLASS021 - Enter the corresponding network

SAP Error Message - Details

• Message type: E = Error

• Message class: CNPOC_MSG_CLASS - Message class for handling CNPOC function group.

• Message number: 021

• Message text: Enter the corresponding network

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 CNPOC_MSG_CLASS021 - Enter the corresponding network ?

  The SAP error message CNPOC_MSG_CLASS021 ("Enter the corresponding network") typically occurs in the context of project system (PS) or network management within SAP. This error indicates that the system expects a network assignment for a particular activity or task, but it has not been provided.
  Cause:
  
  Missing Network Assignment: The most common cause is that the user is trying to perform an action (like assigning an activity or a cost) without specifying a corresponding network.
  Incorrect Configuration: There may be issues with the configuration of the project or network settings in the system.
  Data Entry Error: The user may have overlooked entering the network number or may have entered it incorrectly.
  
  Solution:
  
  Enter the Network: Ensure that you enter the correct network number in the relevant field. This is usually done in the project or network planning screens.
  Check Project Structure: Verify that the project structure is correctly set up and that the network is properly assigned to the project.
  Review Authorizations: Ensure that you have the necessary authorizations to view and edit the network assignments.
  Consult Documentation: If you are unsure about the correct network to enter, consult project documentation or speak with a project manager or SAP consultant.
  Transaction Codes: Use relevant transaction codes (like CN21 for creating networks or CN22 for changing networks) to manage network assignments properly.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to project systems, such as:
  
  CJ20N: Project Builder
  CN21: Create Network
  CN22: Change Network
  CN23: Display Network
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP Help documentation for Project System (PS) to understand how networks and activities are structured and managed.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.