Transaction not yet indexed

Mbi21MXezJmiTnUnxoeeZUS9iHjU8rcURRxLgFZ1ydfC466D7y8nuRB3K3BxkkzXPhCFhEXdEaEEwzPC9B2Q8Gy

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