| Connected Account | The connected account to use for the request | Connected Account | Yes | |
| Appointment ID | ID of the appointment to update | Text (Short) | Yes | |
| Attendee type 1 | | Predefined Choice List | No | |
| Attendee user ID 1 | | Text (Short) | No | |
| Attendee contact ID 1 | | Text (Short) | No | |
| Attendee type 2 | | Predefined Choice List | No | |
| Attendee user ID 2 | | Text (Short) | No | |
| Attendee Contact ID 2 | | Text (Short) | No | |
| Attendee type 3 | | Predefined Choice List | No | |
| Attendee user ID 3 | | Text (Short) | No | |
| Attendee contact ID 3 | | Text (Short) | No | |
| Creator ID | ID of the user who created the appointment | Text (Short) | No | |
| End date | Timestamp that denotes the end of appointment. End date if this is an all-day appointment | Datetime | No | |
| Is all-day? | Whether it is an all-day appointment or not | True/False | No | |
| Latitude | Latitude of the location when you check in for an appointment | Text (Short) | No | |
| Location | Location of the appointment | Text (Short) | No | |
| Longitude | Longitude of the location when you check in for an appointment | Text (Short) | No | |
| Outcome ID | ID of outcome of Appointment sales activity type | Text (Short) | No | |
| Start date | Timestamp that denotes the start of appointment. Start date if this is an all-day appointment | Datetime | No | |
| Target ID | ID of contact/account against whom appointment is created | Text (Short) | No | |
| Target type | | Predefined Choice List | No | |
| Time zone | Timezone that the appointment is scheduled in | Predefined Choice List | No | |
| Title | Title of the appointment | Text (Short) | No | |