Transaction not yet indexed

28Sww9YF4aoTwo7aZMv31mMqBYTgVQESqpvv2LjhMNxU2FoiAmzeBMUTNLpRBQYeK4Yd7e4dQAsx9zocMBYNTmCU

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