# Add Order Document This operation allows you to add a document to an existing order. Endpoint: POST /orders/portIns/{orderId}/documents Version: 1.0 Security: basicAuth, bearerAuth ## Path parameters: - `orderId` (number, required) Order Identifier ## Request fields (application/json): - `documentName` (string) The name of the document. - `description` (string) A description of the contents of the document. - `fileContent` (string) Base64-encoded content representing the file contents. ## Response 200 fields (application/json): - `id` (number) The ID of the order document. - `documentName` (string) The name of the document. - `description` (string) A description of the contents of the document.