How To Fix KG1173 - Assignment can only be made once

KG1173 - Overview

• Message type: E = Error

• Message class: KG1 - CO-PA planning

• Message number: 173

• Message text: Assignment can only be made once

What causes this issue?

You tried to assign characteristic value "&V1&" for characteristic "
&V2&" to another characteristic value more than once. This action is
not supported for the current planning method.

System Response

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

How to fix this error?

Only assign a characteristic value once. If you want to assign a
characteristic value more than once, you need to define more parameter
sets.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KG1173 - Assignment can only be made once ?

  The SAP error message KG1173 ("Assignment can only be made once") typically occurs in the context of controlling (CO) when you are trying to assign a cost object (like a cost center, internal order, or project) to another object, and that assignment has already been made previously. This error is common in scenarios involving cost allocations, internal orders, or when working with cost centers and profit centers.
  
  Cause:
  The error is triggered when:
  
  You attempt to assign a cost object that has already been assigned to another object.
  The system enforces a rule that prevents multiple assignments for the same object to ensure data integrity and accurate cost tracking.
  
  
  Solution:
  To resolve the KG1173 error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Review the existing assignments for the cost object you are trying to assign. You can do this by navigating to the relevant transaction (e.g., transaction codes like KSB1 for cost centers or KO03 for