Transaction not yet indexed

Q645aMrAw8crPb8P9zsQ9PXfGXqcRwXHb5NmfasNJ8r2DeSCJfQxpm9bkAn6A2vuFeXANdhKck5AGUC1yL8HHXs

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