| Connected Account | The connected account to use for the request | Connected Account | Yes | |
| Reminder ID | ID of the reminder to update | Text (Short) | Yes | |
| Contact ID | ID of the contact to associate the reminder with | Text (Short) | No | |
| Description | Description about the reminder - Max 100,000 characters | Text (Long) | No | |
| Frequency type | Frequency of the reminder | Predefined Choice List | No | |
| Initial date | Date of the reminder | Datetime | No | |
| Recurring interval | Interval for the reminder | Number | No | |
| Title | Title of the reminder - max 100,000 characters | Text (Long) | No | |