# Appointment Candidates (GET)

Contains the error codes and error code messages related with the Salesforce Scheduler API for `getAppointmentSlots` (GET) resource.

This table lists HTTP response code descriptions that are unique to this resource.

| HTTP Response Code | Error Code         | Description                                                                                         |
| ------------------ | ------------------ | --------------------------------------------------------------------------------------------------- |
| 400                | `MISSING_ARGUMENT` | Specify either a `workTypeGroupId` or `WorkTypeId`.                                                 |
| 400                | `MISSING_ARGUMENT` | Specify a `serviceTerritoryId` with either a `workTypeGroupId` or `WorkTypeId`.                     |
| 400                | `INVALID_INPUT`    | This isn't a valid `workTypeGroupId` value. Specify a valid ID for the `workTypeGroupId` parameter. |
| 400                | `INVALID_INPUT`    | This isn't a valid `serviceTerritoryId` value. Specify a valid ID for the `territoryId` parameter.  |