How To Fix CN457 - Scheduling with subnetworks not allowed

CN457 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 457

• Message text: Scheduling with subnetworks not allowed

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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CN457 - Details

• The SAP error message CN457 ("Scheduling with subnetworks not allowed") typically occurs in the context of project management and network scheduling within SAP. This error indicates that the system has encountered a situation where it is trying to schedule a project or network that contains subnetworks, which is not permitted in the current configuration or context.
  
  Cause:
  
  Subnetwork Usage: The error arises when you attempt to schedule a project that includes subnetworks. In SAP, subnetworks are used to break down larger networks into smaller, manageable parts, but scheduling them together with the main network is not allowed.
  Network Type: The type of network you are working with may not support scheduling with subnetworks.
  Configuration Settings: There may be specific configuration settings in your SAP system that restrict the scheduling of subnetworks.
  
  
  Solution:
  
  Check Network Structure: Review the network structure to ensure that you are not including subnetworks in the scheduling process. If subnetworks are present, consider