Transaction not yet indexed

521Hk5y1wGdRp7M18v2eU2Q87xV1GXt9yPkVwWSkqvphdSNAK2243C5z4r3Hn367ofBUhfopoKrJCnrSFZDYS3Zc

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