How To Fix WXP606 - No extra break-downs can be assigned to interface &1

WXP606 - Overview

• Message type: E = Error

• Message class: WXP - Retail Planning

• Message number: 606

• Message text: No extra break-downs can be assigned to interface &1

What causes this issue?

The combination of characteristics and break-downs you have entered is
not recognized.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

WXP606 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WXP606 No extra break-downs can be assigned to interface &1
  
  
  Cause:
  This warning message occurs in SAP when you try to assign more break-downs (subdivisions or detailed levels) to a particular interface than the system allows. In the context of SAP, an "interface" here typically refers to a costing or settlement interface, such as in Product Costing, Profitability Analysis (CO-PA), or Controlling (CO) modules.
  The system has a predefined limit on how many break-downs (e.g., cost element break-downs, characteristic break-downs, or settlement rule break-downs) can be assigned to a single interface. When this limit is exceeded, SAP issues this warning to prevent data inconsistencies or performance issues.
  
  When does it typically occur?
  
  During configuration of costing or settlement interfaces.
  When defining or changing break-down structures in CO-PA or Cost Object Controlling.
  When assigning characteristics or cost elements to an interface.
  When creating or modifying settlement rules or