fix: Init internal child table values

(cherry picked from commit 2588970)

erpnext/controllers/accounts_controller.py

@@ -166,6 +166,7 @@ def validate(self):
 		self.disable_pricing_rule_on_internal_transfer()
 		self.disable_tax_included_prices_for_internal_transfer()
 		self.set_incoming_rate()
+		self.init_internal_values()
 
 		if self.meta.get_field("currency"):
 			self.calculate_taxes_and_totals()
@@ -225,6 +226,16 @@ def validate(self):
 
 		self.set_total_in_words()
 
+	def init_internal_values(self):
+		# init all the internal values as 0 on sa
+		if self.docstatus.is_draft():
+			# TODO: Add all such pending values here
+			fields = ["billed_amt", "delivered_qty"]
+			for item in self.get("items"):
+				for field in fields:
+					if hasattr(item, field):
+						item.set(field, 0)
+
 	def before_cancel(self):
 		validate_einvoice_fields(self)