How To Fix KT306 - Controlling area &1 still has number ranges in object &2

KT306 - Overview

• Message type: E = Error

• Message class: KT - RK Message Table Maintenance

• Message number: 306

• Message text: Controlling area &1 still has number ranges in object &2

What causes this issue?

You want to delete controlling area &V1&. However, intervals have been
defined for the controlling area.
Object: &V2&
Name: &V3&

System Response

As long as number intervals exist, deletion cannot be executed.

How to fix this error?

Do not delete controlling area &V1&. Alternately, delete the number
intervals for the object:

Error message extract from SAP system. Copyright SAP SE.

KT306 - Details

• The SAP error message KT306 indicates that there are still number ranges defined for a controlling area in a specific object, which is preventing certain operations from being completed. This typically occurs when you are trying to delete or change a controlling area that still has active number ranges associated with it.
  
  Cause:
  The error arises when:
  
  You attempt to delete or modify a controlling area that has number ranges assigned to it.
  The controlling area is still in use for certain objects (like cost centers, internal orders, etc.) that require number ranges.
  
  
  Solution:
  To resolve the KT306 error, you need to follow these steps:
  
  
  Identify the Object: Determine which object (indicated by &2 in the error message) is associated with the controlling area (&1). This could be cost centers, internal orders, etc.
  
  
  Check Number Ranges: 
  
  Go to the transaction code for the specific object (e.g., KS01 for cost centers, KO01 for internal orders).
  Check the number range settings