As odd/fractional shares will be allocated after each RSP is processed, your RSP investment amount may or may not be 100% utilized. The extra amount will be refunded to your respective currency cash account, and you can refer to your final investment amount in the transaction record.
For USEX RSP with opt in USD Auto-Sweep, the extra amount will be automatically swept from your USD Cash Account to your USD Auto-Sweep account on the next business day.