Transaction not yet indexed

5k21ubRfGWN7MGseo7MoCjUmz1g8NnT8AR7R8YTm2riTmgZheynXQqeLs3gT2Qj8sVJLzQ1kn2bXi62VzaJRWdxZ

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