# CreateInvitationRequestBody
Required parameters
## Fields
| Field | Type | Required | Description |
| -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `emailAddress` | *String* | :heavy_check_mark: | The email address the invitation will be sent to |
| `publicMetadata` | [Optional extends com.clerk.backend_api.models.operations.CreateInvitationPublicMetadata>](../../models/operations/CreateInvitationPublicMetadata.md) | :heavy_minus_sign: | Metadata that will be attached to the newly created invitation.
The value of this property should be a well-formed JSON object.
Once the user accepts the invitation and signs up, these metadata will end up in the user's public metadata. |
| `redirectUrl` | *Optional extends String>* | :heavy_minus_sign: | Optional URL which specifies where to redirect the user once they click the invitation link.
This is only required if you have implemented a [custom flow](https://clerk.com/docs/authentication/invitations#custom-flow) and you're not using Clerk Hosted Pages or Clerk Components. |
| `notify_` | *JsonNullable extends Boolean>* | :heavy_minus_sign: | Optional flag which denotes whether an email invitation should be sent to the given email address.
Defaults to true. |
| `ignoreExisting` | *JsonNullable extends Boolean>* | :heavy_minus_sign: | Whether an invitation should be created if there is already an existing invitation for this email address, or it's claimed by another user. |