SVCCHRG is a cheque payment transaction for bank service charges in QuickBooks Online.
Bank service charges, such as payNow payment transaction fees, Telegraphic transfers (TTs), and cheque-clearing charges, are commonly found on bank statements. The bank service charges will be downloaded automatically to QuickBooks if you have connected QuickBooks Online to the bank. However, if you don’t, you may manually enter the bank charges as an expense or cheque payment transaction in QuickBooks.
Some QuickBooks users may record the bank charge in a lump sum as one payment transaction. You can manually enter it as a payment or on the bank reconciliation page. If you record the bank charge on the reconciliation page, QuickBooks Online will create a payment with SVCCHRG as a reference.

The SVCCHRG payment and the bank reconciliation are closely linked. If you undo the bank reconciliation, QuickBooks will remove the SVCCHRG payment.
Connecting QuickBooks Online with your bank account and setting up banking rules would be an alternative that saves you time and effort if you have many bank charges each month.