Indeed, just a heads up.
I check the route relation with OSM inspector on a daily basis:
https://tools.geofabrik.de/osmi/?view=pubtrans_routes&lon=6.46762&lat=52.36963&zoom=14&baselayer=Geofabrik%20Standard&overlays=ptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes%2Cptv2_routes_valid%2Cptv2_routes_invalid%2Cptv2_error_ways%2Cptv2_error_nodes.

Perhaps also useful for you.