How To Fix STGR106 - Plant &1 is already assigned to reference plant &2

STGR106 - Overview

• Message type: E = Error

• Message class: STGR - Hold store grouping messages

• Message number: 106

• Message text: Plant &1 is already assigned to reference plant &2

What causes this issue?

Plant &V1& is already assigned to reference plant &V2&.

How to fix this error?

You can choose another plant; the help list will indicate you all
available plants.
Otherwhise, if you really want to use the plant you indicated, you
should first unassign the plant from its current reference plant and
after that you can make it new reference plant or you can use Reassign
button to change its reference plant.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message STGR106 - Plant &1 is already assigned to reference plant &2 ?

  The SAP error message STGR106 indicates that a plant (denoted as &1) is already assigned to a reference plant (denoted as &2). This typically occurs in the context of plant assignments in the SAP system, particularly when dealing with logistics or production planning.
  
  Cause:
  The error arises when you attempt to assign a plant that is already linked to another reference plant. In SAP, a reference plant is used to define certain characteristics or settings that can be shared among multiple plants. If you try to assign a plant to a reference plant that is already in use, the system will prevent this action to maintain data integrity.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction code OX18 (or navigate through the menu: Logistics > Production > Master Data > Plant > Assign Plant to Reference Plant) to view the current assignments of the plants.
  Identify the reference plant