Fixes: #5232 - Corrects swagger definition

docs/release-notes/version-2.10.md

@@ -12,6 +12,7 @@
 
 ### Bug Fixes
 
+* [#5232](https://github.com/netbox-community/netbox/issues/5232) - Correct swagger definition for ip_prefixes_available-ips_create API
 * [#5574](https://github.com/netbox-community/netbox/issues/5574) - Restrict the creation of device bay templates on non-parent device types
 * [#5584](https://github.com/netbox-community/netbox/issues/5584) - Restore power utilization panel under device view
 * [#5597](https://github.com/netbox-community/netbox/issues/5597) - Fix ordering devices by primary IP address

netbox/ipam/api/views.py

@@ -178,7 +178,7 @@ class PrefixViewSet(CustomFieldModelViewSet):
 
     @swagger_auto_schema(method='get', responses={200: serializers.AvailableIPSerializer(many=True)})
     @swagger_auto_schema(method='post', responses={201: serializers.AvailableIPSerializer(many=True)},
-                         request_body=serializers.AvailableIPSerializer(many=False))
+                         request_body=serializers.AvailableIPSerializer(many=True))
     @action(detail=True, url_path='available-ips', methods=['get', 'post'], queryset=IPAddress.objects.all())
     @advisory_lock(ADVISORY_LOCK_KEYS['available-ips'])
     def available_ips(self, request, pk=None):