See explanation below.
Explanation
You need to configure a prepayment percentage for all items. The instructions below are for a single item. For this question, you need to select 'All' for all items, enter 2 in the percentage field and select account number
222222 in the account field.
To set up prepayment percentages for items, customers, and vendors
For an item, you can set up a default prepayment percentage for all customers, a specific customer, or a customer price group.
1. Choose the icon, enter Items, and then choose the related link.
2. Select an item, and then choose the
3. On the Sales Prepayment Percentages page, fill in the fields as necessary. Hover over a field to read a short description.
Reference:
https://docs.microsoft.com/en-gb/dynamics365/business-central/finance-set-up-prepayments