1. Typically, the "Confirm" button is unavailable if you have not fully approved the payment.
For example, you had a payment for UAH 18,984. You reconcile it with an invoice for UAH 18,504. There is a balance of UAH 480 left. This balance is automatically reflected in the temporary correspondent account. This account performs a technical function - it shows that the payment has not been fully posted. While this account is in the reconciliation window - the "Confirm" button is inactive.

Therefore, there are two options for action:
- Spread the payment amount in full, that is, click on another invoice for which you want to close the debt:

- If there is simply no second invoice (for example, it is an advance payment), then the balance must be written off to some accounting account. For example, settlements for advances.
To do this, click on the temporary correspondent account and go to the "Manual operation" tab:

In the "Account" line, change the accounting account:

The "Confirm" button has become active:

Please note that in this case, after the invoice for which the advance payment was received appears in the database, in this payment you will need to cancel the reconciliation and replace the advance payment account with the already created invoice.
2. Sometimes it may be that a temporary correspondent account has been duplicated. In this case, you simply need to remove it from the reconciliation window:

After that, the "Confirm" button will become active:
