How To Fix CN255 - Billing plan is only available for components relevant to costing

CN255 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 255

• Message text: Billing plan is only available for components relevant to costing

What causes this issue?

You can maintain an invoiceing plan for general costs activities,
externally processed activities, and components procured externally.

Error message extract from SAP system. Copyright SAP SE.

CN255 - Details

• The SAP error message CN255 ("Billing plan is only available for components relevant to costing") typically occurs in the context of project systems (PS) or when dealing with billing plans in SAP. This error indicates that the billing plan you are trying to use is not applicable to the component or item you are working with, often because the component is not relevant for costing.
  
  Cause:
  
  Component Not Relevant for Costing: The item or component you are trying to bill is not set up to be relevant for costing. This means that it does not have the necessary configuration to support a billing plan.
  Incorrect Configuration: The configuration settings for the project or the billing plan may not be correctly set up to allow for billing plans on certain components.
  Item Category: The item category used in the billing document may not support billing plans.
  Project Structure: The project structure may not be correctly defined