How To Fix KPN028 - There is already an invoicing plan for activity &

SAP Error Message - Details

• Message type: E = Error

• Message class: KPN - Costing: Networks, Projects

• Message number: 028

• Message text: There is already an invoicing plan for activity &

What causes this issue?

There is already an invoicing plan for activity &V1&. You cannot create
a unit costing and an invoicing plan simultaneously for an activity.

System Response

You cannot create the unit costing.

How to fix this error?

Delete the invoicing plan if you do not require it any more. You can
then create the unit costing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KPN028 - There is already an invoicing plan for activity & ?

  The SAP error message KPN028 ("There is already an invoicing plan for activity &") typically occurs in the context of project management or service management when you attempt to create an invoicing plan for an activity that already has an existing invoicing plan associated with it. This can happen in various modules, such as Project System (PS) or Controlling (CO).
  Cause:
  The error is triggered because the system detects that an invoicing plan already exists for the specified activity. This is a safeguard to prevent duplicate invoicing plans, which could lead to inconsistencies in billing and financial reporting.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Invoicing Plans:
  
  Navigate to the relevant transaction (e.g., CJ20N for Project System) and check the activity in question to see if an invoicing plan is already defined.
  You can also use transaction codes like KKAO (for internal orders) or KKA1 (for projects) to review existing invoicing plans.
  
  
  
  Modify or Delete Existing Plan:
  
  If you find that an invoicing plan already exists and you need to change it, you can modify the existing plan instead of creating a new one.
  If the existing plan is no longer needed, you may delete it, but ensure that this action is appropriate for your business processes.
  
  
  
  Consult Documentation:
  
  Review the project documentation or consult with your project manager or finance team to understand the implications of modifying or deleting an invoicing plan.
  
  
  
  Check Configuration:
  
  If you believe this error is occurring incorrectly (e.g., you should be able to create a new plan), check the configuration settings in the SAP system related to invoicing plans. This may require assistance from your SAP Basis or configuration team.
  
  
  
  User Authorization:
  
  Ensure that you have the necessary authorizations to view and modify invoicing plans. Lack of proper permissions can sometimes lead to confusion regarding existing plans.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), KKAO (Order Settlement), and KKA1 (Invoicing Plan).
  SAP Notes: Check SAP Notes for any known issues or patches related to invoicing plans that might be relevant to your version of SAP.
  Documentation: Refer to SAP Help documentation for detailed information on managing invoicing plans and related processes.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team for further assistance.