Add_fetch from dynamic link field

Dear All
i’m trying to add customer name and supplier name in Journal Entry account i add custo field called
party name

how to add script to fetch customer_name from Customer when selected party type is customer
and supplier_name when selected party type is supplier
i tried
cur_frm.add_fetch(“party”, “customer_name”, “party_name”);
it’s work good with customer but when supplier give error
OperationalError: (1054, “Unknown column ‘customer_name’ in ‘field list’”) which is logic
i’m using codes for customer and supplier that why i need names in jv
any help please

this looks like something that needs to be in the product. Why don’t your create an issue on github? Issues · frappe/erpnext · GitHub

Meanwhile, you can try writing js:

frappe.ui.form.on('Journal Entry Account', 'party', function(frm, cdt, cdn) {
     var d = frappe.model.get_doc(cdt, cdn);{
        method: "frappe.client.get_value",
	args: {
		doctype: dt.party_type,
		fieldname: dt.party_type=='Customer' ? 'customer_name' : 'supplier_name',
		filters: { name: },
	callback: function(r, rt) {
		if(r.message) {
			frappe.model.set_value(dt.doctype,, 'party_name', r.message);


Created a custom script with this code, why it’s not working?