# OR81 - Upload the invoice of the order (deprecated) Endpoint: POST /api/orders/{order_id}/invoice ## Path parameters: - `order_id` (string, required) Order identifier ## Query parameters: - `shop_id` (integer) Use this parameter when your user has access to several shops. If not specified, the shop_id from your default shop will be used. ## Request fields (multipart/form-data): - `file` (string, required) Only documents of the following types are supported: csv, doc, xls, xlsx, ppt, pdf, odt, ods, odp, txt, rtf, png, jpg, gif, zpl. Use multipart/form-data with name file