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' > Select '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.