| Connected account | The connected account to use for the request | Connected Account | Yes | |
| Subject | The subject of the activity to create | Text (Short) | Yes | |
| Done | Whether the activity is done or not | Predefined Choice List | No | |
| Type | Type of the activity like "call", "meeting", etc | Text (Short) | Yes | |
| Deal ID | ID of the deal this activity will be associated with | Number | No | |
| Due date | Due Date to activity be done YYYY-MM-DD | Datetime | No | |
| Note | Note of the activity (HTML format) | Text (Long) | No | |
| Organization ID | ID of the organization this activity will be associated with | Text (Short) | No | |
| Person ID | ID of the person this activity will be associated with | Number | No | |
| User ID | ID of the active user whom the activity will be assigned to. If omitted, the activity will be assigned to the authorized user | Text (Short) | No | |
| Custom property 1 name | Name of the property to set | Text (Short) | No | |
| Custom property 1 value | Value of the property to set | Text (Long) | No | |
| Custom property 2 name | Name of the property to set | Text (Short) | No | |
| Custom property 2 value | Value of the property to set | Text (Long) | No | |
| Custom property 3 name | Name of the property to set | Text (Short) | No | |
| Custom property 3 value | Value of the property to set | Text (Long) | No | |