fix(sales-invoice): cannot create debit note with zero qty
diff --git a/erpnext/controllers/taxes_and_totals.py b/erpnext/controllers/taxes_and_totals.py
index 746c6fd..03f3a11 100644
--- a/erpnext/controllers/taxes_and_totals.py
+++ b/erpnext/controllers/taxes_and_totals.py
@@ -139,6 +139,8 @@
 
 				if not item.qty and self.doc.get("is_return"):
 					item.amount = flt(-1 * item.rate, item.precision("amount"))
+				elif not item.qty and self.doc.get("is_debit_note"):
+					item.amount = flt(item.rate, item.precision("amount"))
 				else:
 					item.amount = flt(item.rate * item.qty,	item.precision("amount"))
 
diff --git a/erpnext/public/js/controllers/taxes_and_totals.js b/erpnext/public/js/controllers/taxes_and_totals.js
index 7c1c8c7..956fdca 100644
--- a/erpnext/public/js/controllers/taxes_and_totals.js
+++ b/erpnext/public/js/controllers/taxes_and_totals.js
@@ -114,6 +114,8 @@
 
 				if ((!item.qty) && me.frm.doc.is_return) {
 					item.amount = flt(item.rate * -1, precision("amount", item));
+				} else if ((!item.qty) && me.frm.doc.is_debit_note) {
+					item.amount = flt(item.rate, precision("amount", item));
 				} else {
 					item.amount = flt(item.rate * item.qty, precision("amount", item));
 				}