How To Fix COM_HIERARCHY020 - Enter a numbering scheme; automatic number assignment is active

COM_HIERARCHY020 - Overview

• Message type: E = Error

• Message class: COM_HIERARCHY - Hierarchy

• Message number: 020

• Message text: Enter a numbering scheme; automatic number assignment is active

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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COM_HIERARCHY020 - Details

• The SAP error message COM_HIERARCHY020 typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with the assignment of numbers to cost elements, cost centers, or other hierarchical structures. The error indicates that a numbering scheme needs to be defined because automatic number assignment is active.
  
  Cause:
  The error arises when:
  
  Automatic number assignment is enabled for a particular object (like cost centers or internal orders).
  There is no numbering scheme defined in the system for that object.
  The system is trying to create a new entry (like a new cost center) but cannot do so because it lacks the necessary configuration for number assignment.
  
  
  Solution:
  To resolve this error, you need to define a numbering scheme for the relevant object. Here are the steps to do that:
  
  
  Access the Configuration:
  
  Go to the SAP Easy Access screen.
  Navigate to the relevant configuration area. For example, for cost centers, you would go to:
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