Transaction not yet indexed

21t6fvzeYbAgSZYVoh9WKNZZfE3URTCfPyi1m2yQbisXf4PApCS9cWQhYSmFmpiapMgHdQEdeJ1NvA48eXGHRpi8

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