How To Fix OM498 - Quantity structure type &1 already exists

OM498 - Overview

• Message type: E = Error

• Message class: OM - Customizing Materialwirtschaft

• Message number: 498

• Message text: Quantity structure type &1 already exists

What causes this issue?

You want to add a new entry for quantity structure category &V1&.
An entry with this key already exists
(can also be for a different quantity structure category).

System Response

The system does not allow you to enter the same key twice.

How to fix this error?

Display all available entries by choosing the <LS>Maintain entries</>
function from this message. Choose a quantity structure category that
does not already exist.

Error message extract from SAP system. Copyright SAP SE.

OM498 - Details

• The SAP error message OM498, which states "Quantity structure type &1 already exists," typically occurs in the context of configuring quantity structures in SAP, particularly in the areas of Material Management (MM) or Production Planning (PP). This error indicates that there is an attempt to create a quantity structure type that already exists in the system.
  
  Cause:
  
  Duplicate Entry: The most common cause of this error is that you are trying to create a new quantity structure type with an identifier (e.g., &1) that is already in use or has been defined previously in the system.
  Configuration Error: There may be a misconfiguration in the system where the same quantity structure type is being referenced multiple times.
  Data Migration Issues: If data has been migrated from another system, it is possible that duplicate entries were created during the migration process.
  
  
  Solution:
  
  
  Check Existing Quantity Structures: 
  
  Go to the relevant configuration transaction (e.g., SPRO) and navigate to