erstorderliche
erstorderliche is a term that appears to be a misspelling or a neologism. A search of standard dictionaries and linguistic databases does not yield a recognized meaning for this word. It is possible that "erstorderliche" is a portmanteau, a coined term within a specific community or context, or a typographical error.
If the intention was to refer to a known word, common similar-sounding German words include "erstklassige" (first-class)