When you record a transaction you want to pay electronically, the transaction is posted to a temporary holding account. This type of holding account is called a clearing account or a suspense account. The payment sits in this account until you're ready to create a payment file to upload to your bank for processing.
Check your accounts list for an account named ‘Electronic Clearing Account’ (Accounts command centre > Accounts List).
Here's a sample of what an electronic clearing account looks like (from AccountRight's sample company file, Clearwater):
If this account doesn’t exist in your company file, you'll need to create it and then set this account as the linked (default) account for electronic payments.