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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB102 - You can only maintain units of measure after allocating the batch class ?

  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 follow these steps:
  
  
  Allocate a Batch Class:
  
  Navigate to the transaction code for batch management (e.g., MSC2N for changing batches).
  Select the batch that you are trying to maintain.
  Ensure that a batch class is assigned to the batch. If not, you will need to assign a batch class. This can typically be done in the batch master data.
  
  
  
  Maintain Units of Measure:
  
  Once the batch class is assigned, you can then proceed to maintain the units of measure for the batch.
  
  
  
  Check Configuration:
  
  If you are unsure about which batch class to assign, consult with your SAP configuration team or refer to the batch management configuration settings in your system.
  
  
  
  Related Information:
  
  Batch Management: Understand the concept of batch management in SAP, which allows for tracking and managing inventory in batches, especially for industries like pharmaceuticals, food, and chemicals.
  Batch Class Configuration: Familiarize yourself with how batch classes are configured in SAP, including the characteristics and values that can be assigned to different batches.
  SAP Documentation: Refer to SAP Help documentation for detailed information on batch management and error messages related to it.
  
  By following these steps, you should be able to resolve the LB102 error and successfully maintain the units of measure for your batch.