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Coupa Purchase Orders API

Create, retrieve, update, and manage purchase orders. Purchase orders represent commitments to buy goods or services from suppliers.

Coupa Purchase Orders API is one of 16 APIs that Coupa publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 2 JSON Schema definitions.

Tagged areas include Purchase Orders. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, authentication docs, a getting-started guide, a JSON-LD context, and 2 JSON Schemas.

This API exposes 8 operations across 6 paths, and defines 11 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against a single base URL, https://{instance}.coupahost.com/api.

8 operations 6 paths 11 schemas 2 GET1 POST5 PUT

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://instance.coupahost.com/api
Authentication
OAuth 2.0, API Key
Terms of Service
Resource Areas
1

Authentication & Security 2

Coupa Purchase Orders API declares 2 security schemes for authenticating requests. It supports OAuth 2.0 (oauth2) using the clientCredentials flow, exposing 8 scopes. An API key is passed in the header as X-COUPA-API-KEY (apiKey). By default, every request must be authenticated.

  • oauth2 — OAuth 2.0 authentication. Coupa supports the clientcredentials grant type. Obtain client credentials from Coupa instance setup.
  • apiKey — Legacy API key authentication. Coupa recommends migrating to OAuth 2.0. API keys are configured per Coupa instance.

Paths & Operations 8

Across 6 paths, the API surfaces 8 operations — 2 GET, 1 POST, 5 PUT. Each is listed below with its method, path, parameters, and response codes.

Purchase Orders 8

Create, retrieve, update, and manage purchase orders. Purchase orders represent commitments to buy goods or services from suppliers.

GET
/purchase_orders
Coupa List purchase orders
listPurchaseOrders 10 params → 200400401404500
POST
/purchase_orders
Coupa Create a purchase order
createPurchaseOrder body → 201400401422500
GET
/purchase_orders/{id}
Coupa Get a purchase order
getPurchaseOrder 2 params → 200401404500
PUT
/purchase_orders/{id}
Coupa Update a purchase order
updatePurchaseOrder 1 param body → 200400401404422500
PUT
/purchase_orders/{id}/cancel
Coupa Cancel a purchase order
cancelPurchaseOrder 1 param → 200401404422500
PUT
/purchase_orders/{id}/close
Coupa Close a purchase order
closePurchaseOrder 1 param → 200401404422500
PUT
/purchase_orders/{id}/issue
Coupa Issue a purchase order
issuePurchaseOrder 1 param → 200401404422500
PUT
/purchase_orders/{id}/reopen
Coupa Reopen a purchase order
reopenPurchaseOrder 1 param → 200401404422500

Schemas 11

The contract defines 11 schemas that model the data the API accepts and returns. The most detailed are PurchaseOrder (39 properties), OrderLine (17 properties), PurchaseOrderCreate (14 properties), PurchaseOrderUpdate (12 properties). Each schema is shown below with its type and property counts.

ShippingTermReference
object
Reference to a shipping term
2 properties
PurchaseOrderUpdate
object
Schema for updating a purchase order
12 properties
UserReference
object
Reference to a Coupa user
3 properties
PaymentTermReference
object
Reference to a payment term
2 properties
PurchaseOrderCreate
object
Schema for creating a new purchase order
14 properties 4 required
CurrencyReference
object
Reference to a currency
2 properties
Error
object
1 property
PurchaseOrder
object
A purchase order representing a commitment to purchase goods or services from a supplier.
39 properties
AddressReference
object
Reference to an address
8 properties
SupplierReference
object
Reference to a supplier
3 properties
OrderLine
object
A line item on a purchase order
17 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

coupa-purchase-orders-api-openapi.yml Raw ↑

Other APIs Coupa publishes across the network.

Coupa Integration API
Coupa Supplier API
Coupa Analytics API
Coupa CCW API
Coupa CSO API
Coupa Treasury API
Coupa Open Buy API
Coupa Payments API
Coupa Procurement API
Coupa Invoicing API
Coupa Expenses API
Coupa Inventory and Receipts API
Where this information came from

This is an independent, third-party profile of Coupa Purchase Orders API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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