Yes. You can change the client code after the client has been created, provided the accounts are at the correct status.

To do this:

1. Open the relevant Client/Dataset.
2. Go to Produced Accounts > Status.
3. Ensure the status is set to Not Started.
4. Navigate to Compliance > Client Details > General Information.
5. Locate the Client Code field and enter the new client code.
6. Save your changes.

Note: The accounts must be at Not Started before you can change the client code.