Transaction not yet indexed

MM6nzZn2mt8QWm2JT7kTByaV8zWyR1Etb83Gkn1LNAXqEGsdfq9jDXmj1zEbXBfJQNEMZFGw1Qwn7PQfZPzLYZZ

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