Transaction not yet indexed

Ex1S2NgEagKUuugfqnyJ2AhnPFzpR6ng77ZnDFa534J84WCAnBwZw5TUFRprTk4o1jytLxe4kjL8DuMzFDcZiW4

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