UOM field is editable on the PDH Billing Item screen in production and should NOT be editable

Summary:

Hi- The UOM field is editable on the PDH Billing Item screen in production and should
NOT be editable. Please either restrict this field or remove it from the
display.

Note: Primary unit of measure was set up as non editable, but when we are creating the New Item its was showing we have to enter the value we have remove that field from the UI.

Please give me some suggestion to remove the filed from the page or to restrict.

Thanks!

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