Create a new client

Easily create a new client via MyCodaBox

Easily create a new client via MyCodaBox > CLIENTS > New Client

In the screen that appears, enter the required information about your client and click on Save Client.

When filling in the fields during the creation of the new client, please consider the following information:

  • Client code: This is a unique value that will be linked to your client (certainly useful if you have 2 clients with the same company name but with a different company number or VAT number) and which is used as folder name in the CODA tree structure 
  • Client e-mail: Please do not enter your office e-mail address but your client's, unless it concerns your own account
  • Exact Online Digital Mailbox: Fill in the Exact Online "digital address" (field only visible if your environment is created for the Exact online software).

This procedure is also available in a short free video
On this page you can watch a short video tutorial  'How to add a new client'. Be sure to check out our other free video tutorials, which walk you step-by-step through MyCodaBox with concrete examples.


The Enterprise number field is a mandatory field in your online environment.

MyCodaBox shows a clear warning message in the list view, as well inside client details, when enterprise number is missing on client. The Entreprise number is required:

  • When creating a new client
  • When changing data, ordering new Services or requesting a environment Transfer for an existing client.


When creating a New Client, our system checks whether the Client Code and Company Number data you enter in the form already exists in our system.

  • The Enterprise Number must be unique in our system.
  • The Client Code must be unique in your environment (one environment per accounting software).
  • If the system detects that this data already exists, an information or error message is displayed when you click on Save Client:

'The client already exists in our system': Transfer to your Office proposed
This message appears if the system detects that this client already has an active Account at Codabox:
MyCodaBox then automatically proposes a Transfer from this Client to your Office.

→ Order the required Services in the displayed form:

  • Bank accounts for CODA
  • SODA

'This data already exists': No transfer to your office proposed
If this message appears next to the Company Number and no transfer is proposed:
This message shows that this client is already known on one of your environment.
→ Search on the environment on which you have already added this client

'Client Code already in use'
If this message appears It shows that this Client Code is already known in your environment
→ Choose a new Client Code

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