Transaction not yet indexed

21Cb8m6LiDSSWRi6QngMBxtmENUTMsQXt3GFEbU1NFbMyyekLUpirbssmA93nBbcM1GhV8iQw9rKvRoAM3mreFha

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