Nature	Code	Payments	Stock	Fiscal
Quote	ORC	✅	From type config	❌
Order	NE	✅	From type config	❌
Sales invoice	FT	✅	Per document type	✅
Simplified invoice	FS	✅	Per document type	✅
Invoice-receipt	FR	✅	Per document type	✅
Credit note	NC	✅	Per document type	✅
Debit note	ND	✅	Per document type	✅
Transport guides	GT…GD	Optional	Per document type	✅
Receipt	RE	—	Not available	—

Stock is never set on lines in the request — it follows the document type and item configuration.

Payments requirement depends on document type configuration. Any document type with both CashierFlow and CheckingAccountFlow set to zero allows optional payments; GT…GD, NE, and ORC are typically configured this way.

Document type IDs

Resolve documentTypeId via Usage Guide — document type IDs.

⚠️ Error Reference

Complete reference of all validation and runtime error codes returned by the Invoice API, grouped by category with conditions and resolutions.

View Error Reference →

🎯 Where to Start?

Usage Guide — endpoints, data model, supported natures
Invoices Guide — typical sales flow
Credit Notes Guide — returns
Error Reference — error codes and resolutions

API Reference — OpenAPI
Usage Guide — general reference

Last Updated: June 12, 2026

📚 Available Guides​

📝 Quotes Guide — ORC​

📦 Orders Guide — NE​

🧾 Sales Invoices Guide — FT, FS​

🧾 Invoice-Receipt Guide — FR​

↩️ Credit Notes Guide — NC​

📋 Debit Notes Guide — ND​

🚚 Transport Guides — GT, GR, GA, GC, GD​

💰 Receipts Guide — RE​

📊 Quick Comparison​

Document type IDs​

⚠️ Error Reference​

🎯 Where to Start?​

🔗 Related Resources​

📚 Available Guides

📝 Quotes Guide — ORC

📦 Orders Guide — NE

🧾 Sales Invoices Guide — FT, FS

🧾 Invoice-Receipt Guide — FR

↩️ Credit Notes Guide — NC

📋 Debit Notes Guide — ND

🚚 Transport Guides — GT, GR, GA, GC, GD

💰 Receipts Guide — RE

📊 Quick Comparison

Document type IDs

⚠️ Error Reference

🎯 Where to Start?

🔗 Related Resources