Transaction not yet indexed

ADk88Y6nnfDpUHe2usK6zmzTCSvYRdpvXu1ZtLKMs9DGsStgmHVgheQuWEAsVcQSJ1sDB9DD4tNXVtDarwN2FPS

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