| Name | Type | Description |
|---|---|---|
| voucher | String | Code of voucher being published. |
| sourceId | String | The merchant’s publication ID if it is different from the Voucherify publication ID. It's an optional tracking identifier of a publication. It is really useful in case of an integration between multiple systems. It can be a publication ID from a CRM system, database or 3rd-party service. If `source_id` is provided only 1 voucher can be published per request. |
| customer | PublicationsCreateRequestBodyCustomer | |
| metadata | Object | |
| campaign | CreatePublicationCampaign |