[Python] How to propagate error on create method in DRF serializer?

I'm trying to raise some error based on some business logic as in below

class ConsultationViewset(BaseModelViewset, ListModelViewsetMixin, RetrieveModelViewsetMixin, CreateModelViewsetMixin, UpdateModelViewsetMixin):
serializer_class = ConsultationSerializer
....


class ConsultationSerializer(serializers.ModelSerializer):
def create(self, validated_data):
consultation = ConsultationService.create_consultation(validated_data.pop('customer', None), validated_data)
return consultation


def create_consultation(customer: CustomerFactory.Models.CUSTOMER, validated_data):
if ticket is None:
raise exceptions.PermissionDenied("No active ticket found for this customer, request is forbidden")


My aim is to send the raised message in create_consultation in the response. Yet I keep getting AssertionError: create() did not return an object instance.instead. I could send a custom message if I re-raise the error in the viewset like below, but it felt wrong as the error is AssertionError.

class ConsultationViewset(...):
def perform_create(self, serializer):
try:
serializer.save()
except AssertionError as e:
raise exceptions.PermissionDenied('custom message')


How to properly raise a PermissionDenied error?

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