SAN FRANCISCO (AP) — Disability rights advocates filed a federal lawsuit Wednesday against Wal-Mart Stores Inc., claiming the retail giant refuses to make payment machines accessible to customers who use wheelchairs and scooters.

The plaintiffs allege that Bentonville, Ark.-based Wal-Mart knowingly placed point-of-sale terminals beyond the reach of disabled customers at many of its more than 200 stores in California — in violation of state law and the U.S. Americans with Disabilities Act.