[Fix] Conversion factor in offline POS (#15867)

diff --git a/erpnext/accounts/page/pos/pos.js b/erpnext/accounts/page/pos/pos.js
index 314b91b..91f3711 100755
--- a/erpnext/accounts/page/pos/pos.js
+++ b/erpnext/accounts/page/pos/pos.js
@@ -1407,6 +1407,8 @@
 		this.child.item_code = this.items[0].item_code;
 		this.child.item_name = this.items[0].item_name;
 		this.child.stock_uom = this.items[0].stock_uom;
+		this.child.uom = this.items[0].sales_uom || this.items[0].stock_uom;
+		this.child.conversion_factor = this.items[0].conversion_factor || 1;
 		this.child.brand = this.items[0].brand;
 		this.child.description = this.items[0].description || this.items[0].item_name;
 		this.child.discount_percentage = 0.0;
@@ -1416,8 +1418,8 @@
 		this.child.income_account = this.pos_profile_data['income_account'] || this.items[0].income_account;
 		this.child.warehouse = (this.item_serial_no[this.child.item_code]
 			? this.item_serial_no[this.child.item_code][1] : (this.pos_profile_data['warehouse'] || this.items[0].default_warehouse));
-		this.child.price_list_rate = flt(this.price_list_data[this.child.item_code], 9) / flt(this.frm.doc.conversion_rate, 9);
-		this.child.rate = flt(this.price_list_data[this.child.item_code], 9) / flt(this.frm.doc.conversion_rate, 9);
+		this.child.price_list_rate = flt(this.price_list_data[this.child.item_code] * this.child.conversion_factor, 9) / flt(this.frm.doc.conversion_rate, 9);
+		this.child.rate = flt(this.price_list_data[this.child.item_code] * this.child.conversion_factor, 9) / flt(this.frm.doc.conversion_rate, 9);
 		this.child.actual_qty = me.get_actual_qty(this.items[0]);
 		this.child.amount = flt(this.child.qty) * flt(this.child.rate);
 		this.child.batch_no = this.item_batch_no[this.child.item_code];