multiple level of expansion in crm webapi 2016 Solution : Multi level expansion is not allows in crm 2016 webapi not allowed http://serverurl/api/data/v8.0/new_medicalcase(caseid)?$expand=new_patientcase_mcfamily($expand=new_name($select=fullname)) allowed http://serverurl/api/data/v8.0/new_patientcase(caseid)?$expand=new_patientcase_mcfamily Can't query date values Solution : allowed /contacts?$select=fullname,birthdate&$filter=birthdate eq 1990-01-01 not allowed /contacts?$select=fullname,birthdate&$filter=birthdate eq '1990-01-01'