Transaction not yet indexed

ista1k55zPVHWXGQEvWudrtJPbFgmGGC4VvuRUFqdv37dZZ7EEthT1bruPDQ3XV4aao48Rr4wUUWBbnoK1XCBt2

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