How To Fix CY727 - & has no connection with successor & in res. netw. struct. & in plant &

SAP Error Message - Details

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 727

• Message text: & has no connection with successor & in res. netw. struct. & in plant &

What causes this issue?

The header data of the process order specifies that the operations must
be scheduled on a particular resource network structure.
However, the operation has been scheduled on a resource that is not
defined as a predecessor resource of the resource on which a "successor"
operation is to be carried out.

How to fix this error?

Please schedule the operations in the sequence defined by the resource
network structure.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY727 - & has no connection with successor & in res. netw. struct. & in plant & ?

  The SAP error message CY727 typically indicates an issue related to the network structure in a project or production order. Specifically, it suggests that there is no connection between the predecessor and successor activities in a network, which can lead to problems in scheduling and resource allocation.
  Cause:
  
  Missing Connections: The error arises when there are no defined relationships (dependencies) between the predecessor and successor activities in the network. This can happen if the network was not set up correctly or if changes were made that removed these connections.
  Incorrect Configuration: The network structure may not be configured properly, leading to disconnections between tasks.
  Plant Assignment Issues: The error may also be related to the plant assignment, where the activities are not correctly linked to the relevant plant or location.
  
  Solution:
  
  
  Check Network Structure: Review the network structure in the project or order. Ensure that all activities have the necessary predecessor and successor relationships defined.
  
  Go to the network in question and check the activity relationships.
  Use transaction codes like CN21 (Create Network) or CN22 (Change Network) to inspect and modify the network structure.
  
  
  
  Define Relationships: If relationships are missing, you can define them by:
  
  Adding predecessor and successor relationships between the activities.
  Ensuring that the correct type of relationship (Finish-to-Start, Start-to-Start, etc.) is used based on the project requirements.
  
  
  
  Check Plant Assignments: Ensure that all activities are correctly assigned to the relevant plant. If there are discrepancies, correct the plant assignments in the network activities.
  
  
  Recheck Resource Allocation: Make sure that resources are correctly allocated to the activities and that there are no conflicts that could lead to disconnections.
  
  
  Consult Documentation: If the issue persists, refer to SAP documentation or consult with your SAP support team for further troubleshooting.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN01 (Create Network), CN02 (Change Network), and CN03 (Display Network) for managing networks.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that you have the necessary permissions to make changes to the network structure.
  
  By following these steps, you should be able to resolve the CY727 error and ensure that your project or production order network is correctly configured.