Gas Reimbursement = X
Store Reimbursement = Y
Total Max Reimbursement = Z
Shopper inputs total amount spent for gas. Compare that amount against X. Take the lower of the two amounts.
Shopper inputs total amount spend in store. Compare that amount against Y. Take the lower of the two amounts.
Add total amounts above for both gas and store. Compare that sum against Z. Take the lower of the two amounts, which is the shopper's total reimbursement amount due.
There are lots of things computers aren't good at, but adding and comparing numbers isn't one of them. I think they could do it. I'm hoping that removing the requirement to attach a receipt to the invoice is the first step toward getting rid of the duplication of requiring a submitted invoice altogether.
Is the separate invoicing step for Market Force where you type your name for the CPI? That doesn't seem like the same process as Maritz's to me, but maybe I misunderstood.
Shopper in California's Bay Area