Transaction not yet indexed

21Sm5cqNwe1cUqzAxXsQJU5WG6fdzaLrayjbf5u1MnasucTPjAXHi1XMCuXVd9QapupWvkB6tVXQqEhiv8cZ1max

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