1. Go to your account’s Debit Note related list and click New.
2. Go to your debit note’s Debite Note Line related list and click New Debit NoteLine.
3. Give your debit note line a subtotal of 50 and click Save.
4. Change your debit note’s status to Posted and click Save.
5. Click Allocations.Salesforce Billing displays the Debit Note Allocation page. You’ll see your debit note and all its debit note lines that have positive non-zero balances. You’ll also see all your account’s invoice lines where you can apply your debit note line.
6. Select your $50 debit note line, then select the invoice line for this month’s data security subscription. Enter 50 in the invoice line’s Amount field.
7. Click Allocate.Salesforce Billing adds $50 to your data security subscription invoice line and updates the invoice line’s debit field to a value of 50.