How To Fix IB_DECO124 - Serial number &1 is assigned to material &2 but not to material &3

IB_DECO124 - Overview

• Message type: E = Error

• Message class: IB_DECO - IB: Messages for IBase

• Message number: 124

• Message text: Serial number &1 is assigned to material &2 but not to material &3

What causes this issue?

Serial number &V1& is assigned to material &V2& in installed base
management. The material number you entered (&V3&) deviates from this.

System Response

The system continues to work with material number &V2&.

How to fix this error?

This may happen if the material number for the serial number is changed
in the master data, for example via material transfers or directly.

Procedure for System Administrators

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.

IB_DECO124 - Details

• The SAP error message IB_DECO124 indicates a conflict with serial number assignment in the system. Specifically, it means that a serial number (denoted as &1) is assigned to one material (denoted as &2) but is being attempted to be used with a different material (denoted as &3). This typically occurs in scenarios involving inventory management, production, or sales where serial numbers are used to track individual items.
  
  Cause:
  
  Incorrect Serial Number Assignment: The serial number in question is already linked to a different material, which violates the unique assignment rule for serial numbers in SAP.
  Data Entry Error: There may have been a mistake in data entry where the wrong serial number or material number was input.
  System Configuration: The system may not be configured correctly to handle serial numbers for the materials in question.
  Material Master Data Issues: The material master data for the items involved may not be set up correctly, leading to