> ## Documentation Index
> Fetch the complete documentation index at: https://nango.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Exact Online

## Overview

> [card] [Pre-built tooling](#pre-built-tooling)

> [card] [Pre-built integrations](#pre-built-integrations)

> [card] [Access requirements](#access-requirements)

> [card] [Setup guide](#setup-guide)

> [card] [Useful links](#useful-links)

> [card] [API gotchas](#api-gotchas)

## Pre-built tooling

> [accordion] ✅ Authorization
>
> | Tools | Status |
> | - | - |
> | Pre-built authorization (OAuth) | ✅ |
> | Credentials auto-refresh | ✅ |
> | Auth parameters validation | ✅ |
> | Pre-built authorization UI | ✅ |
> | Custom authorization UI | ✅ |
> | Expired credentials detection | ✅ |

> [accordion] ✅ Read & write data
>
> | Tools | Status |
> | - | - |
> | Pre-built integrations | ✅ |
> | API unification | ✅ |
> | 2-way sync | ✅ |
> | Webhooks from Nango on data modifications | ✅ |
> | Real-time webhooks from 3rd-party API | 🚫 (time to contribute: \<48h) |
> | Proxy requests | ✅ |

> [accordion] ✅ Observability & data quality
>
> | Tools | Status |
> | - | - |
> | HTTP request logging | ✅ |
> | End-to-end type safety | ✅ |
> | Data runtime validation | ✅ |
> | OpenTelemetry export | ✅ |
> | Slack alerts on errors | ✅ |
> | Integration status API | ✅ |

> [accordion] ✅ Customization
>
> | Tools | Status |
> | - | - |
> | Create or customize use-cases | ✅ |
> | Pre-configured pagination | ✅ |
> | Pre-configured rate-limit handling | ✅ |
> | Per-customer configurations | ✅ |

### Others

| Function name | Description | Type |
| - | - | - |
| `attach-file-invoice` | Attach a document/file and optionally link it to a sales invoice | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-contact` | Create a new contact linked to an account | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-customer` | Create a new customer/account in Exact Online. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-invoice` | Create a new sales invoice. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-item` | Create a new item/product | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-purchase-invoice` | Create a new purchase invoice/entry | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `create-sales-order` | Create a new sales order | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `delete-contact` | Delete a contact by ID | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `delete-customer` | Delete a customer/account by ID. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `delete-item` | Delete an item/product by ID. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `get-account` | Retrieve a single CRM account by ID. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `get-contact` | Retrieve a single contact by ID | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `get-current-user` | Get the current authenticated user and their active division. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `get-sales-invoice` | Retrieve a single sales invoice by ID. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-accounts` | List CRM accounts (customers and/or suppliers) | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-contacts` | List CRM contacts. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-divisions` | List all divisions/administrations accessible to the authenticated user. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-document-attachments` | List document attachment metadata. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-documents` | List documents (invoice PDFs, attachments) | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-financial-transactions` | List financial transaction headers. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-gl-accounts` | List general ledger accounts. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-item-groups` | List logistics item groups. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-items` | List logistics items/products. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-journals` | List financial journals | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-payments` | List outgoing payments from the cashflow module. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-purchase-invoices` | List purchase invoice entries. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-sales-invoices` | List sales invoices | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-sales-orders` | List sales orders. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-transaction-lines` | List financial transaction line details including amounts. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `list-vat-codes` | List VAT/tax codes. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `update-contact` | Update an existing contact. | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `update-customer` | Update an existing customer/account | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `update-invoice` | Update a sales invoice (only Status 20 = Open invoices) | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `update-item` | Update an existing item/product | [Tool](https://nango.dev/docs/guides/functions/tools.md) |
| `contacts` | Sync CRM contacts with incremental updates via Modified timestamp | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `customers` | Sync CRM accounts (customers and suppliers) with incremental updates via Modified timestamp. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `divisions` | Sync divisions/administrations as full snapshot | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `document-attachments` | Sync document attachment metadata as full snapshot | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `documents` | Sync document metadata (invoices, files) with incremental updates. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `financial-transactions` | Sync financial transaction headers with date-window checkpoints | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `gl-accounts` | Sync general ledger accounts as full snapshot. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `item-groups` | Sync item groups as full snapshot (small static dataset). | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `items` | Sync logistics items/products with incremental updates. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `journals` | Sync financial journals as full snapshot | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `payments` | Sync outgoing payments from the cashflow module. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `purchase-invoices` | Sync purchase invoice entries with incremental updates via Modified timestamp | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `sales-invoices` | Sync sales invoices with incremental updates via Modified timestamp | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `sales-orders` | Sync sales orders with incremental updates | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `transaction-lines` | Sync financial transaction line details including amounts and GL account assignments. | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |
| `vat-codes` | Sync VAT/tax codes as full snapshot | [Sync](https://nango.dev/docs/guides/functions/syncs/sync-functions.md) |

## Access requirements

| Pre-Requisites | Status | Comment |
| - | - | - |
| Paid dev account | ❓ | |
| Paid test account | ❓ | |
| Partnership | ❓ | |
| App review | ❓ | |
| Security audit | ❓ | |

## Setup guide

*No setup guide yet.*

> [!TIP]
>
> Need help getting started? Get help in the [community](https://nango.dev/slack).

> [!NOTE]
>
> Contribute improvements to the setup guide by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/exact-online.mdx)

## Useful links

* Register your app on the [Dev Portal](https://apps.exactonline.com/)
* Nango implements the [Auth Web APIs mentioned here](https://support.exactonline.com/community/s/knowledge-base#All-All-DNO-Content-gettingstarted) (specifically, it implements the `authorization code` flow).

> [!NOTE]
>
> Contribute useful links by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/exact-online.mdx)

## Connection configuration in Nango

* Exact online uses different domain extensions for different regions.

## API gotchas

* Access Token refreshes are only possible in the last 30 seconds of the last one being valid, or of course when there is no valid Access Token anymore.
* Access Tokens stay valid for only 10 minutes.

> [!NOTE]
>
> Contribute API gotchas by [editing this page](https://github.com/nangohq/nango/tree/master/docs/integrations/all/exact-online.mdx)


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