# CreateInvitationRequestBody Required parameters ## Fields | Field | Type | Required | Description | | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `emailAddress` | *String* | :heavy_check_mark: | The email address the invitation will be sent to | | `publicMetadata` | [Optional](../../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* | :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* | :heavy_minus_sign: | Optional flag which denotes whether an email invitation should be sent to the given email address.
Defaults to true. | | `ignoreExisting` | *JsonNullable* | :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. |