Transaction not yet indexed

21U6v6xkeE5hJFUxrXjG7RpVUX6vXCqyRzRRMtQKEtkce6w2wf4GvHhdZXJT322KKpj2LTJsAPzyD4NN5bwLHTVR

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