Transaction not yet indexed

AMu9bDfcLyBcoKfYCds6HEv3DPxF8e9hpm33LH7qiFhTFENBPGUTeSngU1N1rZvTFz6wz8rvv4m7oyYkeXikgN7

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