Transaction not yet indexed

AMMDW2zfZKwJBZqobU2q6CcdKqUBMgrwex6QhGhAeoCPm2Zgm9tQaPbEqNX6Q6Azp1kPJWpttjifTF6cnARu4H2

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