By The Associated PressPeople in Ohio, Michigan and 15 other states found themselves temporarily unable to use their food stamp debit-style cards on Saturday, after a routine test of backup systems by vendor Xerox Corp. resulted in a system failure. Xerox announced late in the evening that access has been restored for users in the 17 states affected by the outage, hours after the first problems were reported. "Restarting the EBT system required time to ensure service was back at full functionality," spokeswoman Jennifer Wasmer said in an email. An emergency voucher process was available in some of the areas while the problems were occurring, she said. U.S. Department of Agriculture spokeswoman Courtney Rowe underscored that the outage was not related to the government shutdown. Earlier Saturday shoppers left carts of groceries behind at a packed Market Basket grocery store in Biddeford, Maine, because they couldn't get their benefits, said shopper Barbara Colman, of Saco, Maine. The manager put up a sign saying the EBT system was not in use. Colman, who receives the benefits, called an 800 telephone line for the program and it said the system was down due to maintenance, she said. "That's a problem. There are a lot of families who are not going to be able to feed children because the system is being maintenanced," Colman said. She planned to reach out to local officials. "You don't want children going hungry tonight because of stupidity," she said. Colman said the store manager promised her that he would honor the day's store flyer discounts next week. Wasmer said the states affected by the temporary outage also included Alabama, California, Georgia, Iowa, Illinois, Louisiana, Massachusetts, Maryland, Mississippi, New Jersey, Oklahoma, Pennsylvania, Texas and Virginia. Ohio's cash and food assistance card payment systems went down at 11 a.m., said Benjamin Johnson, a spokesman for the Ohio Department of Job and Family Services. Johnson said Xerox asked retailers to revert to a manual system, meaning customers could spend up to $50 until the system was restored.