iterationlayer Extract Purchase Order Data
B2B suppliers, procurement teams, and warehouse operators use this recipe to extract purchase order details at scale — pulling out line items, quantities, pricing, and delivery dates for ERP ingestion or order fulfillment workflows.
APIs Used
Document Extraction (1 credit per page)
Prerequisites
You need an Iteration Layer API key. Get one at platform.iterationlayer.com during the 7-day trial.
For full integration guidance (SDKs, auth, MCP, error handling), see the Iteration Layer Integration Guide.
Implementation
curl -X POST https://api.iterationlayer.com/document-extraction/v1/extract \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"files": [
{
"type": "url",
"name": "po-northstar-retail.pdf",
"url": "https://example.com/purchase-orders/po-northstar-retail.pdf"
}
],
"schema": {
"fields": [
{
"name": "customer_name",
"type": "TEXT",
"description": "Name of the customer or buying company"
},
{
"name": "po_number",
"type": "TEXT",
"description": "Purchase order number"
},
{
"name": "po_date",
"type": "DATE",
"description": "Date the PO was issued"
},
{
"name": "requested_delivery_date",
"type": "DATE",
"description": "Requested delivery date"
},
{
"name": "supplier_name",
"type": "TEXT",
"description": "Name of the supplier or vendor"
},
{
"name": "billing_address",
"type": "TEXT",
"description": "Customer billing address"
},
{
"name": "shipping_address",
"type": "TEXT",
"description": "Delivery address"
},
{
"name": "line_items",
"type": "ARRAY",
"description": "Individual line items on the purchase order",
"fields": [
{
"name": "product_sku",
"type": "TEXT",
"description": "Product SKU or item code"
},
{
"name": "product_name",
"type": "TEXT",
"description": "Product name or description"
},
{
"name": "quantity",
"type": "INTEGER",
"description": "Quantity ordered"
},
{
"name": "unit_price",
"type": "CURRENCY_AMOUNT",
"description": "Price per unit"
},
{
"name": "line_total",
"type": "CURRENCY_AMOUNT",
"description": "Total for this line item"
}
]
},
{
"name": "currency",
"type": "CURRENCY_CODE",
"description": "Order currency"
},
{
"name": "po_total",
"type": "CURRENCY_AMOUNT",
"description": "Total order value"
}
]
}
}'
import { IterationLayer } from "iterationlayer";
const client = new IterationLayer({ apiKey: "YOUR_API_KEY" });
const result = await client.extractDocument({
files: [
{
type: "url",
name: "po-northstar-retail.pdf",
url: "https://example.com/purchase-orders/po-northstar-retail.pdf",
},
],
schema: {
fields: [
{ name: "customer_name", type: "TEXT", description: "Name of the customer or buying company" },
{ name: "po_number", type: "TEXT", description: "Purchase order number" },
{ name: "po_date", type: "DATE", description: "Date the PO was issued" },
{ name: "requested_delivery_date", type: "DATE", description: "Requested delivery date" },
{ name: "supplier_name", type: "TEXT", description: "Name of the supplier or vendor" },
{ name: "billing_address", type: "TEXT", description: "Customer billing address" },
{ name: "shipping_address", type: "TEXT", description: "Delivery address" },
{
name: "line_items",
type: "ARRAY",
description: "Individual line items on the purchase order",
fields: [
{ name: "product_sku", type: "TEXT", description: "Product SKU or item code" },
{ name: "product_name", type: "TEXT", description: "Product name or description" },
{ name: "quantity", type: "INTEGER", description: "Quantity ordered" },
{ name: "unit_price", type: "CURRENCY_AMOUNT", description: "Price per unit" },
{ name: "line_total", type: "CURRENCY_AMOUNT", description: "Total for this line item" },
],
},
{ name: "currency", type: "CURRENCY_CODE", description: "Order currency" },
{ name: "po_total", type: "CURRENCY_AMOUNT", description: "Total order value" },
],
},
});
from iterationlayer import IterationLayer
client = IterationLayer(api_key="YOUR_API_KEY")
result = client.extract_document(
files=[
{
"type": "url",
"name": "po-northstar-retail.pdf",
"url": "https://example.com/purchase-orders/po-northstar-retail.pdf",
}
],
schema={
"fields": [
{"name": "customer_name", "type": "TEXT", "description": "Name of the customer or buying company"},
{"name": "po_number", "type": "TEXT", "description": "Purchase order number"},
{"name": "po_date", "type": "DATE", "description": "Date the PO was issued"},
{"name": "requested_delivery_date", "type": "DATE", "description": "Requested delivery date"},
{"name": "supplier_name", "type": "TEXT", "description": "Name of the supplier or vendor"},
{"name": "billing_address", "type": "TEXT", "description": "Customer billing address"},
{"name": "shipping_address", "type": "TEXT", "description": "Delivery address"},
{
"name": "line_items",
"type": "ARRAY",
"description": "Individual line items on the purchase order",
"fields": [
{"name": "product_sku", "type": "TEXT", "description": "Product SKU or item code"},
{"name": "product_name", "type": "TEXT", "description": "Product name or description"},
{"name": "quantity", "type": "INTEGER", "description": "Quantity ordered"},
{"name": "unit_price", "type": "CURRENCY_AMOUNT", "description": "Price per unit"},
{"name": "line_total", "type": "CURRENCY_AMOUNT", "description": "Total for this line item"},
],
},
{"name": "currency", "type": "CURRENCY_CODE", "description": "Order currency"},
{"name": "po_total", "type": "CURRENCY_AMOUNT", "description": "Total order value"},
]
},
)
package main
import il "github.com/iterationlayer/sdk-go"
func main() {
client := il.NewClient("YOUR_API_KEY")
result, err := client.ExtractDocument(il.ExtractDocumentRequest{
Files: []il.FileInput{
il.FileInput{
Type: "url",
Name: "po-northstar-retail.pdf",
Url: "https://example.com/purchase-orders/po-northstar-retail.pdf",
},
},
Schema: il.ExtractionSchema{
Fields: []any{
il.TextFieldConfig{
Name: "customer_name",
Type: "TEXT",
Description: "Name of the customer or buying company",
},
il.TextFieldConfig{
Name: "po_number",
Type: "TEXT",
Description: "Purchase order number",
},
il.DateFieldConfig{
Name: "po_date",
Type: "DATE",
Description: "Date the PO was issued",
},
il.DateFieldConfig{
Name: "requested_delivery_date",
Type: "DATE",
Description: "Requested delivery date",
},
il.TextFieldConfig{
Name: "supplier_name",
Type: "TEXT",
Description: "Name of the supplier or vendor",
},
il.TextFieldConfig{
Name: "billing_address",
Type: "TEXT",
Description: "Customer billing address",
},
il.TextFieldConfig{
Name: "shipping_address",
Type: "TEXT",
Description: "Delivery address",
},
il.ArrayFieldConfig{
Name: "line_items",
Type: "ARRAY",
Description: "Individual line items on the purchase order",
Fields: []any{
il.TextFieldConfig{
Name: "product_sku",
Type: "TEXT",
Description: "Product SKU or item code",
},
il.TextFieldConfig{
Name: "product_name",
Type: "TEXT",
Description: "Product name or description",
},
il.IntegerFieldConfig{
Name: "quantity",
Type: "INTEGER",
Description: "Quantity ordered",
},
il.CurrencyAmountFieldConfig{
Name: "unit_price",
Type: "CURRENCY_AMOUNT",
Description: "Price per unit",
},
il.CurrencyAmountFieldConfig{
Name: "line_total",
Type: "CURRENCY_AMOUNT",
Description: "Total for this line item",
},
},
},
il.CurrencyCodeFieldConfig{
Name: "currency",
Type: "CURRENCY_CODE",
Description: "Order currency",
},
il.CurrencyAmountFieldConfig{
Name: "po_total",
Type: "CURRENCY_AMOUNT",
Description: "Total order value",
},
},
},
})
if err != nil {
panic(err)
}
_ = result
}
{
"name": "Extract purchase order data in Iteration Layer",
"nodes": [
{
"parameters": {
"content": "## Extract Purchase Order Data\n\nB2B suppliers, procurement teams, and warehouse operators use this recipe to extract purchase order details at scale — pulling out line items, quantities, pricing, and delivery dates for ERP ingestion or order fulfillment workflows.\n\n**Note:** This workflow uses the Iteration Layer community node (`n8n-nodes-iterationlayer`). Install it via Settings > Community Nodes on self-hosted n8n, or add it directly on n8n Cloud with Verified Community Nodes enabled.",
"height": 280,
"width": 500,
"color": 2
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [200, 40],
"id": "f3a4b5c6-d7e8-9012-fabc-789012345601",
"name": "Overview"
},
{
"parameters": {
"content": "### Step 1: Extract Purchase Order Data\nResource: **Document Extraction**\n\nConfigure the Document Extraction parameters below, then connect your credentials.",
"height": 160,
"width": 300,
"color": 6
},
"type": "n8n-nodes-base.stickyNote",
"typeVersion": 1,
"position": [475, 100],
"id": "f3a4b5c6-d7e8-9012-fabc-789012345602",
"name": "Step 1 Note"
},
{
"parameters": {},
"type": "n8n-nodes-base.manualTrigger",
"typeVersion": 1,
"position": [250, 300],
"id": "f3a4b5c6-d7e8-9012-fabc-789012345603",
"name": "Manual Trigger"
},
{
"parameters": {
"resource": "documentExtraction",
"schemaInputMode": "rawJson",
"schemaJson": "{\"fields\":[{\"name\":\"customer_name\",\"type\":\"TEXT\",\"description\":\"Name of the customer or buying company\"},{\"name\":\"po_number\",\"type\":\"TEXT\",\"description\":\"Purchase order number\"},{\"name\":\"po_date\",\"type\":\"DATE\",\"description\":\"Date the PO was issued\"},{\"name\":\"requested_delivery_date\",\"type\":\"DATE\",\"description\":\"Requested delivery date\"},{\"name\":\"supplier_name\",\"type\":\"TEXT\",\"description\":\"Name of the supplier or vendor\"},{\"name\":\"billing_address\",\"type\":\"TEXT\",\"description\":\"Customer billing address\"},{\"name\":\"shipping_address\",\"type\":\"TEXT\",\"description\":\"Delivery address\"},{\"name\":\"line_items\",\"type\":\"ARRAY\",\"description\":\"Individual line items on the purchase order\",\"fields\":[{\"name\":\"product_sku\",\"type\":\"TEXT\",\"description\":\"Product SKU or item code\"},{\"name\":\"product_name\",\"type\":\"TEXT\",\"description\":\"Product name or description\"},{\"name\":\"quantity\",\"type\":\"INTEGER\",\"description\":\"Quantity ordered\"},{\"name\":\"unit_price\",\"type\":\"CURRENCY_AMOUNT\",\"description\":\"Price per unit\"},{\"name\":\"line_total\",\"type\":\"CURRENCY_AMOUNT\",\"description\":\"Total for this line item\"}]},{\"name\":\"currency\",\"type\":\"CURRENCY_CODE\",\"description\":\"Order currency\"},{\"name\":\"po_total\",\"type\":\"CURRENCY_AMOUNT\",\"description\":\"Total order value\"}]}",
"files": {
"fileValues": [
{
"fileInputMode": "url",
"fileName": "po-northstar-retail.pdf",
"fileUrl": "https://example.com/purchase-orders/po-northstar-retail.pdf"
}
]
}
},
"type": "n8n-nodes-iterationlayer.iterationLayer",
"typeVersion": 1,
"position": [500, 300],
"id": "f3a4b5c6-d7e8-9012-fabc-789012345604",
"name": "Extract Purchase Order Data",
"credentials": {
"iterationLayerApi": {
"id": "1",
"name": "Iteration Layer API"
}
}
}
],
"connections": {
"Manual Trigger": {
"main": [
[
{
"node": "Extract Purchase Order Data",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
}
}
Extract purchase order data from the file at [file URL]. Use the extract_document tool with these fields:
- customer_name (TEXT): Name of the customer or buying company
- po_number (TEXT): Purchase order number
- po_date (DATE): Date the PO was issued
- requested_delivery_date (DATE): Requested delivery date
- supplier_name (TEXT): Name of the supplier or vendor
- billing_address (TEXT): Customer billing address
- shipping_address (TEXT): Delivery address
- line_items (ARRAY): Each with product_sku (TEXT), product_name (TEXT), quantity (INTEGER), unit_price (CURRENCY_AMOUNT), line_total (CURRENCY_AMOUNT)
- currency (CURRENCY_CODE): Order currency
- po_total (CURRENCY_AMOUNT): Total order value
Response
{
"success": true,
"data": {
"customer_name": {
"value": "Northstar Retail Group",
"confidence": 0.99,
"citations": ["Bill To: Northstar Retail Group"]
},
"po_number": {
"value": "PO-2026-0847",
"confidence": 0.99,
"citations": ["Purchase Order No: PO-2026-0847"]
},
"po_date": {
"value": "2026-03-18",
"confidence": 0.98,
"citations": ["Date: March 18, 2026"]
},
"requested_delivery_date": {
"value": "2026-04-15",
"confidence": 0.97,
"citations": ["Requested Delivery: April 15, 2026"]
},
"supplier_name": {
"value": "Meridian Manufacturing Co.",
"confidence": 0.99,
"citations": ["Vendor: Meridian Manufacturing Co."]
},
"billing_address": {
"value": "450 Commerce Drive, Suite 200, Chicago, IL 60601",
"confidence": 0.96,
"citations": ["Billing Address: 450 Commerce Drive, Suite 200, Chicago, IL 60601"]
},
"shipping_address": {
"value": "1200 Warehouse Lane, Dock 4, Indianapolis, IN 46204",
"confidence": 0.96,
"citations": ["Ship To: 1200 Warehouse Lane, Dock 4, Indianapolis, IN 46204"]
},
"line_items": {
"value": [
{
"product_sku": {
"value": "SFT-GL-200",
"confidence": 0.98,
"citations": ["SFT-GL-200"]
},
"product_name": {
"value": "Industrial Safety Gloves",
"confidence": 0.98,
"citations": ["Industrial Safety Gloves"]
},
"quantity": {
"value": 200,
"confidence": 0.99,
"citations": ["Qty: 200"]
},
"unit_price": {
"value": {
"amount": "4.50",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 4.50"]
},
"line_total": {
"value": {
"amount": "900.00",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 900.00"]
}
},
{
"product_sku": {
"value": "SFT-VS-150",
"confidence": 0.98,
"citations": ["SFT-VS-150"]
},
"product_name": {
"value": "High-Vis Safety Vests",
"confidence": 0.98,
"citations": ["High-Vis Safety Vests"]
},
"quantity": {
"value": 150,
"confidence": 0.99,
"citations": ["Qty: 150"]
},
"unit_price": {
"value": {
"amount": "12.00",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 12.00"]
},
"line_total": {
"value": {
"amount": "1800.00",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 1,800.00"]
}
},
{
"product_sku": {
"value": "SFT-BT-080",
"confidence": 0.98,
"citations": ["SFT-BT-080"]
},
"product_name": {
"value": "Steel-Toe Work Boots",
"confidence": 0.97,
"citations": ["Steel-Toe Work Boots"]
},
"quantity": {
"value": 80,
"confidence": 0.99,
"citations": ["Qty: 80"]
},
"unit_price": {
"value": {
"amount": "67.50",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 67.50"]
},
"line_total": {
"value": {
"amount": "5400.00",
"currency": "EUR"
},
"confidence": 0.98,
"citations": ["EUR 5,400.00"]
}
}
],
"confidence": 0.97,
"citations": ["Item table with 3 line items"]
},
"currency": {
"value": "EUR",
"confidence": 0.99,
"citations": ["Currency: EUR"]
},
"po_total": {
"value": {
"amount": "8100.00",
"currency": "EUR"
},
"confidence": 0.99,
"citations": ["Total: EUR 8,100.00"]
}
}
}