How To Fix CN063 - You cannot create a subnetwork

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 063

• Message text: You cannot create a subnetwork

What causes this issue?

You have not maintained all the parameters in Customizing which are
necessary to create a subnetwork.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

INCLUDE 'NA_ALLG_VORGEHEN' OBJECT DOKU ID TX
Check your settings in Customizing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN063 - You cannot create a subnetwork ?

  The SAP error message CN063, which states "You cannot create a subnetwork," typically occurs in the context of project management or network planning within SAP. This error can arise due to several reasons, and understanding the cause is essential for finding a solution.
  Causes of Error CN063
  
  
  Incorrect Project Structure: The project or network structure may not allow for the creation of a subnetwork. This can happen if the project is not set up correctly or if the hierarchy is not properly defined.
  
  
  Network Type Restrictions: Certain types of networks may not support subnetworks. For example, if the main network is defined in a way that does not allow for subdivisions, this error will occur.
  
  
  Authorization Issues: The user may not have the necessary permissions to create a subnetwork. This can be due to role restrictions or missing authorizations in the user's profile.
  
  
  System Configuration: There may be configuration settings in the SAP system that prevent the creation of subnetworks. This could be due to specific settings in the project management module.
  
  
  Incomplete Data: Required fields or data may be missing, which can prevent the creation of a subnetwork.
  
  
  Solutions to Error CN063
  
  
  Check Project Structure: Review the project and network structure to ensure it is set up correctly. Make sure that the main network allows for subnetworks.
  
  
  Review Network Type: Verify the type of network you are trying to create. Ensure that it supports subnetworks according to your project requirements.
  
  
  Check Authorizations: Ensure that the user has the necessary permissions to create subnetworks. This may involve checking user roles and authorizations in the SAP system.
  
  
  Consult Configuration Settings: If you have access to system configuration, check the settings related to project management and network planning. Ensure that there are no restrictions in place that would prevent subnetworks.
  
  
  Complete Required Data: Make sure all required fields are filled out correctly before attempting to create the subnetwork. This includes checking for any mandatory fields that may be missing.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to your version of SAP and the project management module.
  
  
  Contact Support: If the issue persists after checking the above points, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  Related Information
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes related to project management and network planning, such as CJ20N (Project Builder) or CN21 (Create Network).
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CN063 error and implement a suitable solution.