How to remove this apply filter

how to remove this apply filter

This filter was added from the code side. you can override and remove this filter if you have custom app

Hi @Vipul_Kumar
I have not added any client script or server script

no this is the ERPNEXT code

Default filter applied,

But if you want to remove then you have to right a client script for that.
Example:

frappe.ui.form.on('Request for Quotation', {
	refresh(frm) {
		frm.fields_dict["suppliers"].grid.get_field("contact").get_query = function (doc, cdt, cdn) {
			let d = locals[cdt][cdn];
			return {
				filters: {},
			};
		};
	}
});