Transaction not yet indexed

21Cf8yfvqaVZxpEmbBAQumhmeiuZrM6nyYBKsyJ6hYoUBCNZFDyf37dXUJRrsVi8fH56HXndGsoAXqPRBJn4XxvJ

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