API | Document create Error

UserDid :dmsuserid4cmp1
AccDid :A7F0PT78MTMZ470WBBT

Payload :
{
"email": "priya.dhamande@harbingergroup.com",
"payload":

{ "candidat_adresse1": "3469 Coolidge Avenue", "candidat_adresse2": "", "candidat_cp": "94602", "candidat_nom": "Test", "candidat_prenom": "Olivier", "candidat_region_actu": "CA", "candidat_tel_fixe": "", "candidat_ville": "Oakland", "poste_date_debut": null, "poste_intitule": "Data Warehouse Analyst" }

,
"requisitionId": "1417",
"sendDocument": true,
"sourceProduct": "CBATS",
"sourceUserId": "ABSSB",
"templateId": "401"
}