You'll receive a confirmation email when you purchase the Sage software, with your serial number and activation key.
To register your software or activate more modules, you'll need these details and sometimes your account number.
If you don't have these details to hand and you've registered your software, you can find them online in My Sage.
If you use Sage 50 Accounts or Sage 50 Payroll, you can use the find my serial number and activation key tool.
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