Transaction not yet indexed

Uq999tFNjxHBwsnuM2ttykXZPp1a2HBLr7kvv7VeKiLV5qJWT4ryYWNPud8ZUnZYVeYcBHpH3DP8f9h3fZ8SRX2

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