Select administration in Accept
Navigate to Management > Administration > Settings
Open the eInvoice folder in settings
Open eConnection settings
Set API version and SimpleInvoicing
Enter App Key, Secret and Company ID
Configure sender details and folder settings
Check the Use debtor file number as KvK option
Open invoice in Accept
Check invoice address and email address
Select Output with eInvoice and eConnection message
Confirm sending in Accept
Connect Accept with eConnect

Connect Accept via the native API with SimpleInvoicing 2.0 for sending and receiving.

Integration methodConnection keys (Native API v3)DirectionSend + ReceiveMinimum subscriptionBasicContract requiredNo

With Accept you can send and receive e-invoices via eConnect in 2026. The integration works via connection keys and supports SimpleInvoicing version 2.0.

Before you start
  • An active eConnect account with at least a Basic subscription
  • Administrator access to your Accept environment
  • Your eConnect connection keys (App Key and Secret)
Setting up the integration
Step 1: Create connection keys

Create connection keys in the eConnect platform. Follow the steps in Create connection keys.

Step 2: Configuration in Accept
  1. Start Accept and select the administration you want to connect.
  2. Go to Management > Administration > Settings.
  3. Open the eInvoice folder and then eConnection (or eConnect, depending on the version).

  4. Configure the following values:
    • Check the box Use API version 3
    • Select SimpleInvoicing version 2.0
    • Enter your email address used for eConnect
    • Paste the App Key and Secret
    • Optionally configure folders for purchase and sales invoices
    • Enter your Company ID (the XCNL- or XCBE-number from the platform)
    • Fill in your sender details (country: NL)



  5. When using version 2.0: check Use debtor file number as KvK.
Step 3: Configure debtors

Record the correct email address and identification number per debtor on the debtor card (Properties tab):

  • Government: enter the OIN number in FAX/OIN
  • Organisation with KvK: enter the KvK number in File/KvK no
  • Without KvK: the platform automatically uses a dummy KvK (99999998)
Step 4: Send invoices
  1. Open the invoice in Accept.
  2. Verify that the correct email address is set at the invoice address.
  3. Click Output and select eInvoice > eConnection message.
  4. Confirm with Yes and type SEND.

Note: Do not include empty invoice lines, as this can disrupt processing.

After sending, you will find the Delivery ID on the "Extra" tab at the bottom of the invoice.

Frequently asked questions
Which SimpleInvoicing version should I use with Accept?

Set SimpleInvoicing to version 2.0. When using version 2.0, also check "Use debtor file number as KvK". Make sure the "Use API version 3" checkbox is checked.

Which identification number do I use for government invoices?

When sending to the government, enter the OIN number in FAX/OIN on the debtor card. For organisations with a KvK number, use the KvK number in File/KvK no. Without a KvK number, the platform automatically uses a dummy KvK.

What if my invoice is not processed after sending?

Check that there are no empty invoice lines in the invoice, as this can disrupt processing. Also verify that the connection keys, Company ID and email address are correctly filled in the eConnection settings.

Need help with the integration? Contact support.

Set up your integration