diff --git a/erpnext/accounts/doctype/payment_request/payment_request.json b/erpnext/accounts/doctype/payment_request/payment_request.json
index 36ef7a59ca8..a25c7208d33 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.json
+++ b/erpnext/accounts/doctype/payment_request/payment_request.json
@@ -482,4 +482,4 @@
  "sort_field": "creation",
  "sort_order": "DESC",
  "states": []
-}
\ No newline at end of file
+}
diff --git a/erpnext/accounts/doctype/payment_request/payment_request.py b/erpnext/accounts/doctype/payment_request/payment_request.py
index 87cd23c25ba..e23187770f9 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/payment_request.py
@@ -883,33 +883,6 @@ def validate_payment(doc, method=None):
 	)
 
 
-def get_paid_amount_against_order(dt, dn):
-	pe_ref = frappe.qb.DocType("Payment Entry Reference")
-	if dt == "Sales Order":
-		inv_dt, inv_field = "Sales Invoice Item", "sales_order"
-	else:
-		inv_dt, inv_field = "Purchase Invoice Item", "purchase_order"
-	inv_item = frappe.qb.DocType(inv_dt)
-	return (
-		frappe.qb.from_(pe_ref)
-		.select(
-			Sum(pe_ref.allocated_amount),
-		)
-		.where(
-			(pe_ref.docstatus == 1)
-			& (
-				(pe_ref.reference_name == dn)
-				| pe_ref.reference_name.isin(
-					frappe.qb.from_(inv_item)
-					.select(inv_item.parent)
-					.where(inv_item[inv_field] == dn)
-					.distinct()
-				)
-			)
-		)
-	).run()[0][0] or 0
-
-
 @frappe.whitelist()
 def get_open_payment_requests_query(doctype, txt, searchfield, start, page_len, filters):
 	# permission checks in `get_list()`
diff --git a/erpnext/accounts/doctype/payment_request/test_payment_request.py b/erpnext/accounts/doctype/payment_request/test_payment_request.py
index 8ceb73176b1..8afb1eebc86 100644
--- a/erpnext/accounts/doctype/payment_request/test_payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/test_payment_request.py
@@ -493,10 +493,12 @@ class TestPaymentRequest(IntegrationTestCase):
 		)
 
 	@IntegrationTestCase.change_settings(
-		"Accounts Settings", allow_multi_currency_invoices_against_single_party_account=1
+		"Accounts Settings", {"allow_multi_currency_invoices_against_single_party_account": 1}
 	)
 	def test_multiple_payment_if_partially_paid_for_multi_currency(self):
-		pi = make_purchase_invoice(currency="USD", conversion_rate=50, qty=1, rate=100)
+		pi = make_purchase_invoice(currency="USD", conversion_rate=50, qty=1, rate=100, do_not_save=1)
+		pi.credit_to = "Creditors - _TC"
+		pi.submit()
 
 		pr = make_payment_request(
 			dt="Purchase Invoice",
@@ -597,10 +599,15 @@ class TestPaymentRequest(IntegrationTestCase):
 		self.assertEqual(pr.outstanding_amount, 0)
 		self.assertEqual(pr.grand_total, 20000)
 
+	@IntegrationTestCase.change_settings(
+		"Accounts Settings", {"allow_multi_currency_invoices_against_single_party_account": 1}
+	)
 	def test_single_payment_with_payment_term_for_multi_currency(self):
 		create_payment_terms_template()
 
-		si = create_sales_invoice(do_not_save=1, currency="USD", qty=1, rate=200, conversion_rate=50)
+		si = create_sales_invoice(
+			do_not_save=1, currency="USD", debit_to="Debtors - _TC", qty=1, rate=200, conversion_rate=50
+		)
 		si.payment_terms_template = "Test Receivable Template"  # 84.746 and 15.254
 		si.save()
 		si.submit()