How To Fix IB_DECO126 - Material &1 exists in another installed base

IB_DECO126 - Overview

• Message type: E = Error

• Message class: IB_DECO - IB: Messages for IBase

• Message number: 126

• Message text: Material &1 exists in another installed base

What causes this issue?

Material &V1& is currently assigned to installed base &V3&. The
installed base that you entered (&V2&) deviates from this.

System Response

The system continues to work with installed base &V3&.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

IB_DECO126 - Details

• The SAP error message IB_DECO126 indicates that a specific material (denoted as &1) is already associated with another installed base. This typically occurs in the context of SAP's Installed Base (IB) functionality, which is used to manage and track the lifecycle of products and their components.
  
  Cause:
  The error arises when you attempt to assign a material to an installed base that is already linked to a different installed base. This can happen due to:
  
  Duplicate Assignment: The material is already assigned to another installed base, and SAP does not allow multiple assignments for the same material.
  Incorrect Data Entry: There may be a mistake in the data entry process, leading to an attempt to assign the same material to multiple installed bases.
  System Configuration: The system may be configured in a way that restricts the assignment of materials to installed bases.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Use transaction codes