Data received when listing objects

HTTP 200 OK
Content-Type: application/json
Vary: Accept
Allow: GET, POST, HEAD, OPTIONS

[
    {
        "id": 87,
        "nom": "Panel 200",
        "analyseur": {
            "id": 200,
            "automate": "13644",
            "nom": "Analyseur 1"
        }
    },
   .......
]

Data used for creation

# sent to /qc/api/panels/ via the RESTframework html interface

{
    "nom": "test",
    "analyseur": {
            "id": 104,
            "automate": "Advia 1800",
            "nom": "Advia 1800"
        }
}

Error received when creating

HTTP 400 BAD REQUEST
Content-Type: application/json
Vary: Accept
Allow: GET, POST, HEAD, OPTIONS

{
    "analyseur": {
        "nom": [
            "This field must be unique."
        ],
        "automate": [
            "This field must be unique."
        ]
    }
}

qc_api.py

# -*- coding: utf-8 -*-

from rest_framework import serializers, viewsets, routers

from qc.models import Panel
from automate.models import Analyseur


class AnalyseurSerializer(serializers.ModelSerializer):

    class Meta:
        model = Analyseur
        fields = ("id", "automate", "nom")


class PanelSerializer(serializers.ModelSerializer):
    analyseur = AnalyseurSerializer()

    class Meta:
        model = Panel
        fields = ("id", "nom", "analyseur")


class PanelViewSet(viewsets.ModelViewSet):
    queryset = Panel.objects.select_related()
    serializer_class = PanelSerializer


router = routers.DefaultRouter()
router.register(r'panels', PanelViewSet)