Transaction not yet indexed

21LjUNfAMmvtgnyE59SrSfZqiHpqcg3C5G8Z1abcbXZ1HVhs18hyApirwtpcHU8exveD3Tt9DSdmZTZ9BFHectt9

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