diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.py b/erpnext/accounts/doctype/payment_entry/payment_entry.py
index 1330ee8093c..38364d8cef2 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.py
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.py
@@ -1849,7 +1849,6 @@ def validate_inclusive_tax(tax, doc):
 			frappe.throw(_("Valuation type charges can not be marked as Inclusive"))
 
 
-# todo: modify its test
 @frappe.whitelist()
 def get_outstanding_reference_documents(args, validate=False):
 	if isinstance(args, str):
@@ -2007,7 +2006,6 @@ def get_outstanding_reference_documents(args, validate=False):
 				)
 			)
 
-
 	return data
 
 
diff --git a/erpnext/accounts/doctype/payment_request/payment_request.py b/erpnext/accounts/doctype/payment_request/payment_request.py
index 66fc5ebe7b4..42d47596570 100644
--- a/erpnext/accounts/doctype/payment_request/payment_request.py
+++ b/erpnext/accounts/doctype/payment_request/payment_request.py
@@ -272,10 +272,8 @@ class PaymentRequest(Document):
 		)
 
 	def set_as_paid(self):
-		self.db_set("status", "Paid")
-
 		if self.payment_channel == "Phone" and self.status != "Paid":
-			self.db_set("status", "Paid")
+			self.db_set({"status": "Paid", "outstanding_amount": 0})
 
 		else:
 			payment_entry = self.create_payment_entry()
@@ -304,8 +302,8 @@ class PaymentRequest(Document):
 		bank_amount = self.outstanding_amount
 
 		if party_account_currency == ref_doc.company_currency and party_account_currency != self.currency:
-			total = ref_doc.get("rounded_total") or ref_doc.get("grand_total")
-			base_total = ref_doc.get("base_rounded_total") or ref_doc.get("base_grand_total")
+			total = ref_doc.get("rounded_total") or ref_doc.grand_total
+			base_total = ref_doc.get("base_rounded_total") or ref_doc.base_grand_total
 			party_amount = flt(self.outstanding_amount / total * base_total, self.precision("grand_total"))
 		else:
 			party_amount = self.outstanding_amount
@@ -575,7 +573,6 @@ def get_existing_payment_request_amount(ref_dt, ref_dn, only_paid=False):
 	If `only_paid` is True, it will return the total amount of paid Payment Requests. \n
 	Else, it will return the total amount of all Payment Requests.
 	"""
-
 	PR = frappe.qb.DocType("Payment Request")
 
 	if only_paid:
diff --git a/erpnext/controllers/accounts_controller.py b/erpnext/controllers/accounts_controller.py
index ca57be3cb0c..96dd55200d9 100644
--- a/erpnext/controllers/accounts_controller.py
+++ b/erpnext/controllers/accounts_controller.py
@@ -1944,35 +1944,32 @@ class AccountsController(TransactionBase):
 		self.set_advance_payment_status()
 
 	def set_advance_payment_status(self):
-		new_status = None
-
-		stati = frappe.get_all(
-			"Payment Request",
-			{
-				"reference_doctype": self.doctype,
-				"reference_name": self.name,
-				"docstatus": 1,
-			},
-			pluck="status",
+		from erpnext.accounts.doctype.payment_request.payment_request import (
+			get_existing_payment_request_amount as get_paid_amount,
 		)
-		if self.doctype in frappe.get_hooks("advance_payment_receivable_doctypes"):
-			if not stati:
+
+		new_status = None
+		available_payment_requests = frappe.db.count(
+			"Payment Request",
+			{"reference_doctype": self.doctype, "reference_name": self.name, "docstatus": 1},
+		)
+		total_amount = self.get("rounded_total") or self.grand_total
+		paid_amount = get_paid_amount(self.doctype, self.name, only_paid=True)
+
+		if paid_amount == total_amount:
+			new_status = "Fully Paid"
+		elif paid_amount > 0 and paid_amount < total_amount:
+			new_status = "Partially Paid"
+		elif self.doctype in frappe.get_hooks("advance_payment_receivable_doctypes"):
+			if not available_payment_requests:
 				new_status = "Not Requested"
-			elif "Requested" in stati or "Failed" in stati:
+			elif paid_amount == 0 or paid_amount == 0.0:
 				new_status = "Requested"
-			elif "Partially Paid" in stati:
-				new_status = "Partially Paid"
-			elif "Paid" in stati:
-				new_status = "Fully Paid"
-		if self.doctype in frappe.get_hooks("advance_payment_payable_doctypes"):
-			if not stati:
+		elif self.doctype in frappe.get_hooks("advance_payment_payable_doctypes"):
+			if not available_payment_requests:
 				new_status = "Not Initiated"
-			elif "Initiated" in stati or "Failed" in stati or "Payment Ordered" in stati:
+			elif paid_amount == 0 or paid_amount == 0.0:
 				new_status = "Initiated"
-			elif "Partially Paid" in stati:
-				new_status = "Partially Paid"
-			elif "Paid" in stati:
-				new_status = "Fully Paid"
 
 		if new_status == self.advance_payment_status:
 			return