How to fix SAP error LB100?

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.

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

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LB100 - Overview

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
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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.

LB100 - Details

Error Code: LB100
Error Message: Base unit of measure & cannot be changed as prop./prod. unit available

Summary
This error occurs when you try to change the base unit of measure for a material, but the system prevents it because a proportional or production unit of measure is already assigned to the material.

Root Causes
The material master has a proportional unit of measure defined, which depends on the base unit and restricts changes.
A production unit of measure is maintained in the material master, locking the base unit from being altered.
Attempting to change the base unit of measure after transactions or production data exist for the material.
System configuration or master data inconsistencies where unit of measure dependencies are not aligned.
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LB100 - Related SAP Errors

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