Check the "TFN withheld", cannot be more than 50% of gross interest for each interest worksheet.
Illustration:
Gross: $4646.40'
TFN withheld: $3410.00
These amounts cannot be lodged to ATO because TFN withheld cannot be more than 50% of gross interest for each interest worksheet. This is mandatory for ATO and cannot be avoided.
You may call and confirm this with the ATO, ie why they provide such amounts.