Transaction not yet indexed

21U7gcQLe9GDuJdEMHLwHS8GH5MUHowmNKSwbrFGCdoUCnvb8ZXW53PNWNJr9bCD5Z3uw9oJwaou6vsor23rK4Mt

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