How To Fix CN571 - Configuration cannot be copied (different classes)

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 571

• Message text: Configuration cannot be copied (different classes)

What causes this issue?

You want to assign a configured sales document item to a network. The
characteristic value assignment from the sales order cannot be used,
because the standard network &V1&, alternative &V2&, which was used to
create the network, has been assigned other variant classes than the
material in the sales document item.

System Response

The network configuration is not changed.

How to fix this error?

Check whether you have assigned the correct sales document item, and if
necessary the class assignement in the configuration profile of the
material and of the material in the sales document item.
You can assign the sales document item, but you may have to make
corrections in the network manually.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN571 - Configuration cannot be copied (different classes) ?

  The SAP error message CN571, which states "Configuration cannot be copied (different classes)," typically occurs in the context of project system (PS) or configuration management when attempting to copy a configuration from one object to another, but the objects belong to different classes or categories.
  Cause:
  
  Different Object Classes: The primary reason for this error is that the source and target objects belong to different classes. For example, you might be trying to copy a configuration from a project to a network or from one type of project to another type that is not compatible.
  Incompatible Configuration Types: The configurations you are trying to copy may have different attributes or structures that are not compatible with each other.
  Missing Authorizations: Sometimes, the user may not have the necessary authorizations to perform the copy operation, leading to this error.
  
  Solution:
  
  Check Object Classes: Verify that the source and target objects are of the same class. You can do this by checking the object types in the SAP system.
  Use Compatible Objects: Ensure that you are copying configurations between compatible objects. If they are not compatible, you may need to manually recreate the configuration in the target object.
  Review Configuration Settings: Look into the configuration settings of both the source and target objects to ensure they can be aligned or modified to allow for copying.
  Authorization Check: Ensure that you have the necessary authorizations to perform the copy operation. If not, contact your SAP administrator to grant the required permissions.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on copying configurations within the project system or relevant module.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CN21 (Create Work Breakdown Structure), CN22 (Change Work Breakdown Structure), and CN41 (Display Work Breakdown Structure) to navigate through project configurations.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.