Transaction not yet indexed

Y4k6CEvPktnpJPYt18mmvfGpcuB3kLTbD73i1xKj2rdCSGRn8Q6C5ZJjbLkMwqNB3P5JCgFXdGwXSqa9U8S5Fk3

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