055S&SA=U&VED=2AHUKEWJQ85CSTDACAXWILWOFHSL1DQQQFNOECAMQAG&USG=AOVVAW31PQ7R-V-M7WYLEOMYL3U4 is not a valid tag

The format for a tag can be found on the tags explained page. In short:

4 symbols long
using digits and uppercase letters
excluding the letter O in favour of the digit 0 (except that this rule didn't exist in the very beginning of the Stacks project)