Transaction not yet indexed

MT28Hkpj7XMmppsDNfhzMqLUvgkMPzEjVd7R73i2GyxVkn6Uic3Q9PDuXesiqboHVyiS43V6kBHZwHoiTRdJLsW

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