> ## Documentation Index
> Fetch the complete documentation index at: https://gobl-improv.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Ordering

Ordering provides additional information about the ordering process including references to other documents and alternative parties involved in the order-to-delivery process.

## Schema ID

`https://gobl.org/draft-0/bill/ordering`

## Properties

| Title            | Property     | Type                                                  | Req. | Description                                                                                                                     |
| ---------------- | ------------ | ----------------------------------------------------- | ---- | ------------------------------------------------------------------------------------------------------------------------------- |
| Code             | `code`       | [cbc.Code](/draft-0/cbc/code)                         |      | Identifier assigned by the customer or buyer for internal routing purposes.                                                     |
| Identities       | `identities` | array of [org.Identity](/draft-0/org/identity)        |      | Any additional Codes, IDs, SKUs, or other regional or custom identifiers that may be used to identify the order.                |
| Cost             | `cost`       | [cbc.Code](/draft-0/cbc/code)                         |      | Buyer accounting reference cost code associated with the document.                                                              |
| Period           | `period`     | [cal.Period](/draft-0/cal/period)                     |      | Period of time that the invoice document refers to often used in addition to the details provided in the individual line items. |
| Buyer            | `buyer`      | [org.Party](/draft-0/org/party)                       |      | Party who is responsible for issuing payment, if not the same as the customer.                                                  |
| Seller           | `seller`     | [org.Party](/draft-0/org/party)                       |      | Seller is the party liable to pay taxes on the transaction if not the same as the supplier.                                     |
| Projects         | `projects`   | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Projects this invoice refers to.                                                                                                |
| Contracts        | `contracts`  | array of [org.DocumentRef](/draft-0/org/document_ref) |      | The identification of contracts.                                                                                                |
| Purchase Orders  | `purchases`  | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Purchase orders issued by the customer or buyer.                                                                                |
| Sales Orders     | `sales`      | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Sales orders issued by the supplier or seller.                                                                                  |
| Receiving Advice | `receiving`  | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Receiving Advice.                                                                                                               |
| Despatch Advice  | `despatch`   | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Despatch advice.                                                                                                                |
| Tender Advice    | `tender`     | array of [org.DocumentRef](/draft-0/org/document_ref) |      | Tender advice, the identification of the call for tender or lot the invoice relates to.                                         |