diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 1b1485f..85ed126 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -11,6 +11,9 @@
 import erpnext
 from erpnext.accounts.deferred_revenue import validate_service_stop_date
 from erpnext.accounts.doctype.gl_entry.gl_entry import update_outstanding_amt
+from erpnext.accounts.doctype.repost_accounting_ledger.repost_accounting_ledger import (
+	validate_docs_for_deferred_accounting,
+)
 from erpnext.accounts.doctype.sales_invoice.sales_invoice import (
 	check_if_return_invoice_linked_with_payment_entry,
 	get_total_in_party_account_currency,
@@ -484,6 +487,11 @@
 						_("Stock cannot be updated against Purchase Receipt {0}").format(item.purchase_receipt)
 					)
 
+	def validate_for_repost(self):
+		self.validate_write_off_account()
+		self.validate_expense_account()
+		validate_docs_for_deferred_accounting([], [self.name])
+
 	def on_submit(self):
 		super(PurchaseInvoice, self).on_submit()
 
@@ -531,8 +539,7 @@
 			]
 			child_tables = {"items": ("expense_account",), "taxes": ("account_head",)}
 			self.needs_repost = self.check_if_fields_updated(fields_to_check, child_tables)
-			self.validate_write_off_account()
-			self.validate_expense_account()
+			self.validate_for_repost()
 			self.db_set("repost_required", self.needs_repost)
 
 	def make_gl_entries(self, gl_entries=None, from_repost=False):
diff --git a/erpnext/accounts/doctype/repost_accounting_ledger/repost_accounting_ledger.py b/erpnext/accounts/doctype/repost_accounting_ledger/repost_accounting_ledger.py
index e533fed..dbb0971 100644
--- a/erpnext/accounts/doctype/repost_accounting_ledger/repost_accounting_ledger.py
+++ b/erpnext/accounts/doctype/repost_accounting_ledger/repost_accounting_ledger.py
@@ -21,29 +21,8 @@
 
 	def validate_for_deferred_accounting(self):
 		sales_docs = [x.voucher_no for x in self.vouchers if x.voucher_type == "Sales Invoice"]
-		docs_with_deferred_revenue = frappe.db.get_all(
-			"Sales Invoice Item",
-			filters={"parent": ["in", sales_docs], "docstatus": 1, "enable_deferred_revenue": True},
-			fields=["parent"],
-			as_list=1,
-		)
-
 		purchase_docs = [x.voucher_no for x in self.vouchers if x.voucher_type == "Purchase Invoice"]
-		docs_with_deferred_expense = frappe.db.get_all(
-			"Purchase Invoice Item",
-			filters={"parent": ["in", purchase_docs], "docstatus": 1, "enable_deferred_expense": 1},
-			fields=["parent"],
-			as_list=1,
-		)
-
-		if docs_with_deferred_revenue or docs_with_deferred_expense:
-			frappe.throw(
-				_("Documents: {0} have deferred revenue/expense enabled for them. Cannot repost.").format(
-					frappe.bold(
-						comma_and([x[0] for x in docs_with_deferred_expense + docs_with_deferred_revenue])
-					)
-				)
-			)
+		validate_docs_for_deferred_accounting(sales_docs, purchase_docs)
 
 	def validate_for_closed_fiscal_year(self):
 		if self.vouchers:
@@ -184,3 +163,26 @@
 					doc.make_gl_entries()
 
 				frappe.db.commit()
+
+
+def validate_docs_for_deferred_accounting(sales_docs, purchase_docs):
+	docs_with_deferred_revenue = frappe.db.get_all(
+		"Sales Invoice Item",
+		filters={"parent": ["in", sales_docs], "docstatus": 1, "enable_deferred_revenue": True},
+		fields=["parent"],
+		as_list=1,
+	)
+
+	docs_with_deferred_expense = frappe.db.get_all(
+		"Purchase Invoice Item",
+		filters={"parent": ["in", purchase_docs], "docstatus": 1, "enable_deferred_expense": 1},
+		fields=["parent"],
+		as_list=1,
+	)
+
+	if docs_with_deferred_revenue or docs_with_deferred_expense:
+		frappe.throw(
+			_("Documents: {0} have deferred revenue/expense enabled for them. Cannot repost.").format(
+				frappe.bold(comma_and([x[0] for x in docs_with_deferred_expense + docs_with_deferred_revenue]))
+			)
+		)