| Attribute | Format | Length | Required | Description | Example |
| order_ref | Alphanumeric | 3-255 | Yes | Unique special order reference descriptor | 103495 |
| line_item_ref | Alphanumeric | 3-255 | Yes | Unique reference for this line item | 103495-1 |
| product_ref | Alphanumeric | 3-255 | No | Unique product or service reference | BK345 |
| sku | Alphanumeric | 1-255 | No | SKU of product variant | B01N54LF |
| barcode | Alphanumeric | 1-255 | No | Barcode (UPC, EAN, ISBN, etc.) | 03600291452 |
| name | Alphanumeric | 1-255 | Yes | Line item title | Custom Goat Skin Gloves |
| description | Alphanumeric | 65535 | No | Detailed description | The smoothest leather west of the Himalayas. |
| image_url | URL | 65535 | No | Image URL. JPG or PNG | |
| quantity | Numeric | 1-255 | Yes | Quantity | 2 |
| price | Numeric | 1-255 | No | Price per item | 456.39 |
| currency_code | Alphanumeric | 3 | Yes (when price is present) | Currency | USD |
| status | Enum [open | closed | partial | cancelled] | | Yes | Fulfillment status of this line item | open |
