How To Fix LB100 - Base unit of measure & cannot be changed as prop./prod. unit available

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 100

• Message text: Base unit of measure & cannot be changed as prop./prod. unit available

What causes this issue?

You have tried to change the base unit of measure. This is not allowed
as you have already maintained <DS:DE.LRMEI_WS>proportion units or
product units</> for the material.

System Response

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

How to fix this error?

Please change the base unit of measure to the unit of measure &V1&
again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB100 - Base unit of measure & cannot be changed as prop./prod. unit available ?

  The SAP error message LB100 indicates that the base unit of measure (UoM) for a material cannot be changed because there are existing stock or production orders that reference the current unit of measure. This is a common issue when trying to modify the base unit of measure for materials that are already in use in the system.
  Cause:
  
  Existing Stock: There are stock quantities in the warehouse that are measured in the current base unit of measure.
  Production Orders: There are open production orders that reference the material with the current base unit of measure.
  Dependencies: Other dependent objects (like purchase orders, sales orders, etc.) may also be linked to the material in its current unit of measure.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Stock Levels:
  
  Use transaction code MMBE to check if there are any stock quantities in the current base unit of measure.
  If stock exists, you may need to either consume it, transfer it, or adjust it before changing the base unit of measure.
  
  
  
  Review Open Production Orders:
  
  Use transaction code CO02 to check for any open production orders that reference the material.
  If there are open orders, you may need to complete or close them before changing the base unit of measure.
  
  
  
  Check Related Documents:
  
  Review any related documents such as purchase orders, sales orders, or reservations that may be using the current base unit of measure.
  You can use transaction codes like ME23N (for purchase orders) or VA03 (for sales orders) to check these documents.
  
  
  
  Change the Base Unit of Measure:
  
  Once you have cleared any dependencies, you can change the base unit of measure using transaction code MM02.
  Navigate to the "Basic Data" view and make the necessary changes.
  
  
  
  Consult with Your Team:
  
  If you are unsure about the implications of changing the base unit of measure, consult with your inventory management or production planning team to ensure that the change will not disrupt operations.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  MMBE: Stock Overview
  MM02: Change Material
  CO02: Change Production Order
  ME23N: Display Purchase Order
  VA03: Display Sales Order
  
  
  
  Documentation: Refer to SAP Help documentation for more detailed information on managing units of measure and material master data.
  
  
  Best Practices: It is advisable to perform such changes during a maintenance window or when the system is least active to minimize disruption.
  
  
  By following these steps, you should be able to resolve the LB100 error and successfully change the base unit of measure for the material in question.