Transaction not yet indexed

4n21jb5kYtXCXdPyDqvp9m1Uem5t8CjwQPqZBEe6A5E7rMtrSqeDYsiC1dVB2UAamHNbcmAgoebawKHFjzZoEut6

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