diff --git a/erpnext/manufacturing/doctype/bom/bom.py b/erpnext/manufacturing/doctype/bom/bom.py
index 2c342c0..817b8e9 100644
--- a/erpnext/manufacturing/doctype/bom/bom.py
+++ b/erpnext/manufacturing/doctype/bom/bom.py
@@ -104,28 +104,9 @@
 	)
 
 	def autoname(self):
-		existing_boms = frappe.get_all("BOM", filters={"item": self.item})
+		existing_boms = frappe.get_all("BOM", filters={"item": self.item}, pluck="name")
 		if existing_boms:
-			existing_bom_names = [bom.name for bom in existing_boms]
-
-			# split by "/" and "-"
-			delimiters = ["/", "-"]
-			pattern = "|".join(map(re.escape, delimiters))
-			bom_parts = [re.split(pattern, bom_name) for bom_name in existing_bom_names]
-
-			# filter out BOMs that do not follow the following formats:
-			# - BOM/ITEM/001
-			# - BOM/ITEM/001-1
-			# - BOM-ITEM-001
-			# - BOM-ITEM-001-1
-			valid_bom_parts = list(filter(lambda x: len(x) > 1 and x[-1], bom_parts))
-
-			# extract the current index from the BOM parts
-			if valid_bom_parts:
-				indexes = [cint(part[-1]) for part in valid_bom_parts]
-				index = max(indexes) + 1
-			else:
-				index = 1
+			index = self.get_next_version_index(existing_boms)
 		else:
 			index = 1
 
@@ -156,6 +137,29 @@
 
 		self.name = name
 
+	@staticmethod
+	def get_next_version_index(existing_boms: List[str]) -> int:
+		# split by "/" and "-"
+		delimiters = ["/", "-"]
+		pattern = "|".join(map(re.escape, delimiters))
+		bom_parts = [re.split(pattern, bom_name) for bom_name in existing_boms]
+
+		# filter out BOMs that do not follow the following formats:
+		# - BOM/ITEM/001
+		# - BOM/ITEM/001-1
+		# - BOM-ITEM-001
+		# - BOM-ITEM-001-1
+		valid_bom_parts = list(filter(lambda x: len(x) > 1 and x[-1], bom_parts))
+
+		# extract the current index from the BOM parts
+		if valid_bom_parts:
+			indexes = [cint(part[-1]) for part in valid_bom_parts]
+			index = max(indexes) + 1
+		else:
+			index = 1
+
+		return index
+
 	def validate(self):
 		self.route = frappe.scrub(self.name).replace('_', '-')
 
diff --git a/erpnext/manufacturing/doctype/bom/test_bom.py b/erpnext/manufacturing/doctype/bom/test_bom.py
index e472388..346870d 100644
--- a/erpnext/manufacturing/doctype/bom/test_bom.py
+++ b/erpnext/manufacturing/doctype/bom/test_bom.py
@@ -441,6 +441,27 @@
 		}
 		create_nested_bom(bom_tree, prefix="")
 
+	def test_version_index(self):
+
+		bom = frappe.new_doc("BOM")
+
+		version_index_test_cases = [
+			(1, []),
+			(1, ["BOM#XYZ"]),
+			(2, ["BOM/ITEM/001"]),
+			(2, ["BOM/ITEM/001", "BOM/ITEM/001-1"]),
+			(2, ["BOM-ITEM-001",]),
+			(2, ["BOM-ITEM-001", "BOM-ITEM-001-1"]),
+			(3, ["BOM-ITEM-001", "BOM-ITEM-002", "BOM-ITEM-001-1"]),
+			(4, ["BOM-ITEM-001", "BOM-ITEM-002", "BOM-ITEM-003"]),
+			(2, ["BOM-ITEM-001", "BOM-ITEM-001-1", "BOM-ITEM-001-2"]),
+		]
+
+		for expected_index, existing_boms in version_index_test_cases:
+			with self.subTest():
+				self.assertEqual(expected_index, bom.get_next_version_index(existing_boms),
+						msg=f"Incorrect index for {existing_boms}")
+
 
 def get_default_bom(item_code="_Test FG Item 2"):
 	return frappe.db.get_value("BOM", {"item": item_code, "is_active": 1, "is_default": 1})