Transaction not yet indexed

21EXC2f9LQ4sVFQ8WtFjLxP2jPLKgc1QKApKEKFpGQaBJLQW8JfSgAE4P2UPTPuMjo1qBLAwM1w8AyhYHNrX8SpE

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