# Sync2Books

## Docs

- [Sync2Books documentation](https://docs.sync2books.com/index.md): One API to sync financial data to accounting systems and keep Kenyan businesses tax-compliant with KRA eTIMS.
- [Quickstart](https://docs.sync2books.com/quickstart.md): Get an API key, connect an accounting system, and sync your first expense in about five minutes.
- [Authentication](https://docs.sync2books.com/concepts/authentication.md): How Sync2Books authenticates API requests: your API key, the optional request signature, and the client secret used to sign it.
- [Companies & connections](https://docs.sync2books.com/concepts/companies-and-connections.md): The shared object model behind every Sync2Books product: organizations, applications, companies, and connections.
- [The sync model](https://docs.sync2books.com/concepts/sync-model.md): How Sync2Books pushes data to external systems asynchronously, and how you track the result with sync batches.
- [Environments & base URLs](https://docs.sync2books.com/concepts/environments.md): The Sync2Books base URL, and the difference between Development and Production credentials.
- [Errors & rate limits](https://docs.sync2books.com/concepts/errors-and-rate-limits.md): The consistent error shape, common HTTP status codes, and rate-limit headers used across the Sync2Books API.
- [Expenses](https://docs.sync2books.com/expenses-overview.md): Write categorized expenses and attachments to all major accounting software, handling the complexities of expense reconciliation
- [Get started with Expenses](https://docs.sync2books.com/expenses-getting-started.md): This guide will help you set up your Expenses integration and make your first expense sync.
- [Configure customer in Sync2Books](https://docs.sync2books.com/expenses-configure-customer.md): Create a company and its connection that form the structure required to execute the expense sync process
- [Map transactions](https://docs.sync2books.com/expenses-map-transactions.md): Associate expense transactions with the correct accounts, tax rates, suppliers, and customers in your customer's accounting software
- [Create transactions](https://docs.sync2books.com/expenses-create-transactions.md): Create expense transactions and submit them for sync to your customer's accounting software
- [Sync transactions](https://docs.sync2books.com/expenses-sync-transactions.md): Understand how the sync process works and monitor the status of your expense transactions
- [Upload receipts](https://docs.sync2books.com/expenses-upload-receipts.md): Attach files (receipts, invoices, documents) to synced expense transactions
- [eTIMS Compliance Overview](https://docs.sync2books.com/etims-overview.md): Sync2Books lets you connect your invoicing system to KRA eTIMS without building against KRA yourself. We handle the eTIMS device protocol, signing,...
- [Get Started with eTIMS](https://docs.sync2books.com/etims-getting-started.md): This guide takes you from zero to a signed KRA receipt for your first sale.
- [Provisioning eTIMS](https://docs.sync2books.com/etims-provisioning.md): Provisioning connects a company to KRA eTIMS. It's the one-time setup that must happen before that company can register items or create sales.
- [Catalog (Items)](https://docs.sync2books.com/etims-catalog.md): Before you can invoice a product through eTIMS, it must exist in the catalog and be synced to KRA. There are two distinct steps:
- [Sales & Credit Notes](https://docs.sync2books.com/etims-sales.md): This is where compliance pays off: you submit a sale, the platform pushes it to KRA over OSCU, and KRA returns a signed receipt (ETR number). You can then...
- [Stock (Inventory)](https://docs.sync2books.com/etims-stock.md): eTIMS tracks inventory movements. Sync2Books exposes two operations:
- [Tracking Results (the async model)](https://docs.sync2books.com/etims-tracking-results.md): Most eTIMS operations don't finish inside your HTTP request. They are accepted, processed, and the KRA result is confirmed shortly after. Understanding this...
- [Codes & Values](https://docs.sync2books.com/etims-codes.md): Several catalog and sales fields take codes. This page lists the values Sync2Books recognizes so you can fill them in correctly for your items and packaging.
- [eTIMS Postman collection](https://docs.sync2books.com/etims-postman.md): A ready-to-run Postman collection with every operational eTIMS request — catalog, stock, and sales.
- [eTIMS Integration as a Third-Party Integrator (OSCU Path)](https://docs.sync2books.com/ETIMS_OSCU_INTEGRATION_AS_THIRD_PARTY.md): This guide explains how you act as the third-party integrator: your platform syncs data between your customers’ accounting tools (e.g. QuickBooks, Xero) and...
- [QuickBooks Online](https://docs.sync2books.com/integrations/quickbooks-online/quickbooks-online-overview.md): Learn about our QuickBooks Online integration.
- [Set up the QuickBooks Online integration](https://docs.sync2books.com/integrations/quickbooks-online/quickbooks-online-setup.md): Learn how to set up and enable the QuickBooks Online integration in Sync2Books.
- [QuickBooks Online FAQs](https://docs.sync2books.com/integrations/quickbooks-online/quickbooks-online-faq.md): Answers to common questions about the QuickBooks Online integration.
- [QuickBooks Online integration reference](https://docs.sync2books.com/integrations/quickbooks-online/quickbooks-online-reference.md): Complete API reference for the QuickBooks Online integration.
- [Odoo](https://docs.sync2books.com/integrations/odoo/odoo-overview.md): Learn about our Odoo integration.
- [Set up the Odoo integration](https://docs.sync2books.com/integrations/odoo/odoo-setup.md): Learn how to connect a company to a merchant's own Odoo instance.
- [Odoo FAQs](https://docs.sync2books.com/integrations/odoo/odoo-faq.md): Answers to common questions about the Odoo integration.
- [Odoo integration reference](https://docs.sync2books.com/integrations/odoo/odoo-reference.md): Complete API reference for the Odoo integration.
- [Link Integration](https://docs.sync2books.com/link-integration.md): Integrate the Sync2Books Link component to connect accounting systems (QuickBooks, Xero, Sage) in your application.
- [API Reference](https://docs.sync2books.com/api-reference.md): Complete API reference with interactive examples.
- [eTIMS API Reference](https://docs.sync2books.com/etims-api-reference.md): Complete reference for the eTIMS endpoints on the Sync2Books API. All endpoints are authenticated with your API key and scoped to a company: