It depends whether you make your standard contributions as before-tax or after-tax contributions.
Reportable employer super contributions are extra superannuation payments that your employer pays, over and above the SG rate of 11.5%.
So when you increase your standard member contributions using the before-tax salary sacrifice contribution method, you'll have a higher level of reportable super contributions to list on your tax return. You can view your reportable employer super contributions in myGov or the ATO app.