Transport name in sales order

[walstanb]

You’ll need to write a custom script to filter out the Suppliers with Is Transporter set.

Refer:

https://frappeframework.com/docs/user/en/guides/app-development/overriding-link-query-by-custom-script

and

Filtered LINK field list

Go to Custom Script > New. Select DocType as Item and write a set_query script for your field - frappe.ui.form.on("Item", { setup: function(frm) { frm.set_query("name_of_your_field", function() { return { filters: [ ["Item","item_group", "in", ["option1", "option2"]] ] } }); } });