When making a payment via Bancontact (or other bank cards), the money transits through an account from Unifiedpost Payments before getting forwarded to the supplier's bank account.
Here's how the money flows during such payments:
The money is debited from your bank card;
The money transits through Unifiedpost Payments' bank account BE24 3631 7681 1438;
The money is credited to your Banqup Business Wallet;
The money is debited from your Banqup Business Wallet to the suppliers' respective bank accounts.
Accountants will have to reconcile this credit against the debit (card movement) on the external bank account.