Please read the overview article before completing these steps: Sage Line 50/Instant: Overview
In Sage 50 Accounts v24.0 and below, you must enter a Sage Data Objects serial number and activation key before a third party application can link to your accounts data.
In Sage 50 Accounts v24.1 and above, a Sage Data Objects serial number and activation key is no longer needed.
Within Sage, go to 'Tools'. Select 'Activation' and then click 'Enable 3rd party integration'. Call the relevant number and type in the registration information you are given by Sage. Click 'Continue', you will see a confirmation that the object has been registered.
Note: You must repeat this on every installation of Sage.