Apply for electronic invoices

Regla offers electronic invoices via server messaging. Electronic invoices are accounting documents that meet the requirements of the Standards Council for electronic invoices. Electronic invoices are a huge streamlining of the accounting business of both for the sender and the receiver of invoices.

Regla cooperates with two messaging servers, InExchange and Unimaze.


In order to activate electronic invoices in Regla, you need to apply for a subscription from a messaging server. This is done in the steps here below:


1.  Apply for electronic invoices

  • Go to Admin > File administration > Request eCommerce invoices
  • All fields must be filled in here.

2. Select eCommerce under MISC and enter the username and password from the messaging server into Regla.

  • Go to Admin > File Administration > The company

Note! You do not need to fill in the field "GLN number" and check the field "Use GLN number" unless the company is using such a number.


3. Register customers for eCommerce

Once the username and password from the messaging server have been entered, Regla's connection to the messaging server is ready.

Next, you need to find the customers who should be able to send electronic invoices. These customers need to be marked separately.

  • You need to go to Sales > File administration > Customers.

Here you can search for the relevant customers, you can also create a new customer.

When the right customer is found, you need to:

  • Click on the customer
  • Check the column "eCommerce"
  • Click Update

4. Setting up customer GLN numbers (optional)

Large and departmental companies, in some cases use so-called GLN numbers. Examples include large stores and local associations, for instance, The City of Reykjavík, Hagkaup, Krónan, etc. The GLN numbers are used to distinguish stores and departments.


The GLN number is a 13-digit number provided by your customer.

For example: Purchasing Office Reykjavík GLN: 5699112300068


  • Go to Sales > File administration > Customers
  • Find the customer in question
  • Select the "eCommerce" tab
  • Check the box "Use GLN number"
  • Enter the GLN number of each branch/department in the column "GLN number"

The customer assigns GLN numbers, for each store/department separately. Each store/department must have its own ID. Thus, it is best to register the main ID number at headquarters. For departments/stores, the system leaves 2 decimal places at the end of the ID number, so that the department/store can be distinguished.

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