Transaction not yet indexed

YLgnaD7Db7mD5cKHEskHJK6iuFKY9LPBQNieT2VgWMx2GidJGF54MSGhgqomu7QUM4bZyYyHSh1n9GP2SSUCH18

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.