Create draft invoice
Create a draft invoice for a customer with lines. The draft is not booked.
POST https://cotlet.dev/api/v1/e-conomic/customers/{customer_number}/draft-invoices
write
Creates a draft with the customer, date, currency, payment terms, layout and lines. The recipient name and VAT zone are copied from the customer. The draft stays editable and is not booked, so it reaches no one and runs without asking first. Lines take a product number or a free text with quantity and unit price. Returns the draft number and net, VAT and gross totals.
Parameters
| Name | Type | Description |
|---|---|---|
| customer_number integer required | integer | Customer number from list_customers or create_customer. |
| date date required | date | Invoice date, YYYY-MM-DD. |
| currency string required | string | Currency code, e.g. DKK. |
| payment_terms_number integer required | integer | Payment terms number from the customer. |
| layout_number integer required | integer | Layout number for the invoice. |
| lines array required | array | Lines: product_number (optional), description, quantity, unit_price. |
Request
curl -X POST https://cotlet.dev/api/v1/e-conomic/customers/14/draft-invoices \
-H "Authorization: Bearer $COTLET_API_KEY" \
-H "Content-Type: application/json" \
-d '{"date":"2026-10-31","currency":"DKK","payment_terms_number":2,"layout_number":1,"lines":[{"description":"Consulting, October","quantity":10,"unit_price":95},{"description":"Workshop day","quantity":1,"unit_price":250}]}'result = client.call("e-conomic", "create_draft_invoice", {"customer_number":14,"date":"2026-10-31","currency":"DKK","payment_terms_number":2,"layout_number":1,"lines":[{"description":"Consulting, October","quantity":10,"unit_price":95},{"description":"Workshop day","quantity":1,"unit_price":250}]})const result = await cotlet.call('e-conomic', 'create_draft_invoice', {"customer_number":14,"date":"2026-10-31","currency":"DKK","payment_terms_number":2,"layout_number":1,"lines":[{"description":"Consulting, October","quantity":10,"unit_price":95},{"description":"Workshop day","quantity":1,"unit_price":250}]});cotlet call e-conomic create_draft_invoice --data '{"customer_number":14,"date":"2026-10-31","currency":"DKK","payment_terms_number":2,"layout_number":1,"lines":[{"description":"Consulting, October","quantity":10,"unit_price":95},{"description":"Workshop day","quantity":1,"unit_price":250}]}'Example response
{
"draft_invoice_number": 118,
"customer_number": 14,
"date": "2026-10-31",
"currency": "DKK",
"lines": 2,
"total_net": 1200,
"total_vat": 300,
"total_gross": 1500,
"booked": false
}