Schedule entry - start , end date time & all day check box not updated via rest api

[MihirV]

I am trying to create schedule entry for a user via rest api ( example HR app passing time off for user). Even though rest request is sucessfull and record is created start date time , end date time & all day check box are not getting created in Servicenow. Start/End date time remains blank & all day check box remains default false. ACLs are already created to update via rest services.

Here is json 

POST - {instance} /api/now/table/cmn_schedule_span?sysparm_display_value=true

{"schedule":"a5a77fec93f4b2106b36fc2fdd03d65f",

"name":"HR time off",

"type":"Time off",

"show_as":"Busy",

"start_date_time":"2025-11-02 00:00",

"end_date_time":"2025-11-02 23:59"

"all_day": true

}

Response still indicate - 

        "start_date_time": "",

        "end_date_time": "",

        "all_day": "false",

[Kieran Anson]

Hi,

The start date time, and end date time fields expect the values in ISO8601 format, e.g

20251103T170000

for

Year 2025

Month 11

Date 03

Hour 17

Minute 00

Second 00