How To Fix 30019 - You are not allowed to change the unit of measure

30019 - Overview

• Message type: E = Error

• Message class: 30 - Service Master: Basic Data

• Message number: 019

• Message text: You are not allowed to change the unit of measure

What causes this issue?

If units of measure may be changed by the user again, this message will
be needed.

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

System Response

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 30019 - You are not allowed to change the unit of measure ?

  The SAP error message 30019, "You are not allowed to change the unit of measure," typically occurs when a user attempts to change the unit of measure for a material or item in a transaction where such changes are restricted. This restriction is often in place to maintain data integrity and consistency within the system.
  Causes:
  
  Authorization Issues: The user may not have the necessary permissions to change the unit of measure for the material.
  Material Status: The material may be in a status that does not allow changes (e.g., blocked, inactive).
  Transaction Type: Certain transactions do not permit changes to the unit of measure (e.g., during goods movements, inventory counts).
  Configuration Settings: The system may be configured to restrict changes to the unit of measure for specific materials or under certain conditions.
  Existing Transactions: If there are existing transactions (like purchase orders, sales orders, or stock movements) that reference the material, changing the unit of