Transaction not yet indexed

521PYCjNtm5FGAhZWZEVgJDnBZhZYFSSKuHe4cJHYC1FnGvWBeh4wXeFHWwP3nrBkmQ7aLM7unB4TfrkXyE1e7rs

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