I've noticed a potential map error on an OpenStreetMap-based application. Can you tell me the process for reporting or correcting map errors on OpenStreetMap Germany's website? Specifically, what's the first step to verify the error on their main map, and what are the two primary methods for contributing to a fix if the error persists?
Navigate to the 'Kontakt' (Contact) page on openstreetmap.de. Locate the section titled 'Fehler in OSM gefunden?' (Found errors in OSM?). Identify the recommended first step for verifying if an error is still present on the official OpenStreetMap Germany map. Identify the two main options provided for contributing to fixing map data if the error persists.
State that the recommended first step is to verify if the error is also visible on 'unserer Karte' (their map) on openstreetmap.de. State that the two main ways to contribute to fixing map data are 'Eine Fehlermeldung abgeben' (submitting an error report) and 'Die Daten selbst korrigieren' (correcting the data themselves).