IdentifyById

?itemtype[0]=Bog
&itemtype[1]=Member
&itemid[0]=999999
&itemid[1]=37

Response (114 bytes)

[
    {
        "error": "Unrecognized [itemtype] `Bog`",
        "error_code": "INVALID_PARAMS"
    },
    true
]

This help response is displayed by adding &help to any API call. Use the Raw Response in your apps.