How To Fix LB102 - You can only maintain units of measure after allocating the batch class

LB102 - Overview

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 102

• Message text: You can only maintain units of measure after allocating the batch class

What causes this issue?

To be able to maintain proportion units or product units, you must have
assigned a <DS:GLOS.Class>Class</> in the <DS:GLOS.Class_type>Class
type</> BATCH to 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 assign a class to the material.

Error message extract from SAP system. Copyright SAP SE.

LB102 - Details

• The SAP error message LB102, "You can only maintain units of measure after allocating the batch class," typically occurs in the context of batch management in SAP. This error indicates that you are trying to maintain or change the units of measure for a batch without first assigning a batch class to that batch.
  
  Cause:
  
  
  Batch Class Not Assigned: The primary cause of this error is that the batch you are trying to work with does not have a batch class assigned to it. In SAP, batch classes are used to define characteristics and attributes for batches, and certain operations (like maintaining units of measure) require that a batch class is already allocated.
  
  
  Incorrect Process Flow: You may be attempting to perform actions in the wrong sequence. The system requires that you first allocate a batch class before you can make changes to the units of measure.
  
  
  
  Solution:
  To resolve this error, you need to