Transaction not yet indexed

521e3o66AZZ55dmCXkRyckGPgSVTR4U2JTUb3am1ZkHreDKju7zwSnd1zJGeEqnhfZ7Vd2MugjLfuUmLo9p1u83U

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