This json format worked for me creating user with profile2 term reference fields in which multiple selection can be done. Below profile_student_profile is term reference field with multiple selection. { "name":"oiu", "mail":"oiu@aol.com", "field_mobile_number":{ "und":{ "0":{ "value":"987393" } } }, "pass":"adsa", "field_requirement":{ "und":{ "0":{ "value":"vzxvczx" } } }, "field_gender":{ "und":"female" }, "field_class":{ "und":[ "12" ] }, "field_area":{ "und":[ "31" ] }, "status":1, "field_preferred_fee...