Transaction not yet indexed

421Po3Mbs728iKHzv7oFE6HAs6VpmDJG2AXUbGXLfNGWZViWUemdsSagNJWEfygpG1DK7iJTCjQpQJKnYbcxTH2k

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