FCG only rounds 2 decimal places when dividing percentage among multiple recipients. i.e. if you have a designated grant set to distribute 5% of the cash available by 3 recipients, and assign each recipient 33.33%, FCG does not recognize these figures as totaling 100% because it rounds to only two decimal places. If you increase 1 recipient percentage to 33.34%, FCG will let you generate grants, however the grant amounts are not equal. The only workaround for this it to calculate 5% of cash available outside of the system and set the designated grant calculation to total amount for all payments which then allows the amounts per recipient to total within 0.01 of the actual total.
It would be nice if FCG auto applied the remaining pennies to a specified recipient if this occurs.