Customers upstairs guest bathroom was backing up whenever they were running the sink and flushing. The toilet sewage was coming up into the shower, after testing the entire house only the one bathroom was affected, so I pulled the toilet and ran my cable after running my cable I was able to clear the blockage and after testing all the water was draining perfectly with no leaks scheduled for camera tech to come Wednesday morning to see why was the main line backing up to locate septic tank in the front yard