authenticationToken (required)(string:20): Komet Sales security token.
prebookId (required)(integer:20): the Komet Sales internal prebook ID that you want to update. You can obtain this value from the prebook.create API method.
prebookItemId (required)(number:20): ID of the Komet Sales prebook item that you want to delete. This value can be obtained from the prebook.create API method.