Transaction not yet indexed

ME51afRyhHGUoEsodrFKKL8CufsvhvGXgEPaQ4hM6vQhs4TNqBVDz9hTKyRfN4EFkwCvh4Jq9FkFUQ5SezcdPD8

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