How To Fix MW135 - Plant exists already in plant group

MW135 - Overview

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 135

• Message text: Plant exists already in plant group

What causes this issue?

The plant already exists in the plant group entered.

System Response

A plant can only exist once in an allocation rule.

How to fix this error?

Delete the second entry.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW135 - Plant exists already in plant group ?

  The SAP error message MW135 ("Plant exists already in plant group") typically occurs when you attempt to assign a plant to a plant group that already contains that plant. This is a validation error indicating that the plant is already part of the specified plant group, and therefore cannot be added again.
  
  Cause:
  
  Duplicate Assignment: The plant you are trying to assign to the plant group is already included in that group.
  Data Entry Error: There may have been a mistake in data entry, leading to an attempt to add the same plant multiple times.
  Configuration Issue: The plant group may have been incorrectly configured or set up in the system.
  
  
  Solution:
  
  
  Check Existing Assignments:
  
  Navigate to the relevant transaction (e.g., OX18 for plant groups) and check the current assignments of the plant group to confirm that the plant is already included.
  
  
  
  Avoid Duplicate Entries:
  
  If the plant is already part of the group, you do not need to