Transaction not yet indexed

Am4xLZffHM99gaRkNxQaEife2Q5YpYxqYNjdWSex3CrrtMa6DVXb4KhbD3DqH6icNqJ2vv553Q6pSF7JKBVTosi

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