How To Fix C2527 - Network already linked to another Major Assembly

SAP Error Message - Details

• Message type: E = Error

• Message class: C2 - Other messages production orders

• Message number: 527

• Message text: Network already linked to another Major Assembly

What causes this issue?

The Network already contain installation kits from another Major
Assembly. Exploding Major assemblies, other than what are linked with
network in table MPE_BOM_PS_REL will cause inconsistency in Project.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message C2527 - Network already linked to another Major Assembly ?

  The SAP error message C2527, "Network already linked to another Major Assembly," typically occurs in the context of project management or production planning within SAP, particularly when dealing with networks in the Project System (PS) or Production Planning (PP) modules. This error indicates that the network you are trying to link to a major assembly is already associated with another major assembly, which is not allowed.
  Cause:
  
  Network Assignment: The network you are trying to assign is already linked to a different major assembly. In SAP, a network can only be linked to one major assembly at a time.
  Project Structure: The project structure may not be set up correctly, leading to conflicts in network assignments.
  Data Integrity Issues: There may be inconsistencies in the data or configuration that prevent the network from being linked to the desired major assembly.
  
  Solution:
  
  Check Existing Links: Review the existing assignments of the network to see which major assembly it is currently linked to. You can do this by navigating to the network in question and checking its details.
  Reassign the Network: If the network needs to be linked to a different major assembly, you may need to unlink it from the current major assembly first. This can typically be done in the network's detail view.
  Create a New Network: If the existing network is required for another major assembly and cannot be unlinked, consider creating a new network specifically for the new major assembly.
  Consult Documentation: Refer to SAP documentation or your organization's guidelines for managing networks and major assemblies to ensure compliance with best practices.
  Check Authorizations: Ensure that you have the necessary authorizations to make changes to network assignments.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21 (Create Network), CN22 (Change Network), and CN23 (Display Network) to manage networks effectively.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Training and Support: If you are unsure about the process, consider reaching out to your SAP support team or attending training sessions on project management and network handling in SAP.
  
  By following these steps, you should be able to resolve the C2527 error and manage your networks and major assemblies effectively within SAP.