WT_ERR(__wt_upd_alloc(session, value, WT_UPDATE_STANDARD, &upd, &size));
                upd->durable_ts = unpack.tw.durable_start_ts;
                upd->start_ts = unpack.tw.start_ts;
                upd->txnid = unpack.tw.start_txn;

                /*
                 * Instantiating both update and tombstone if the prepared update is a tombstone.
                 * This is required to ensure that written prepared delete operation must be removed
                 * from the data store, when the prepared transaction gets rollback.
                 */
                if (WT_TIME_WINDOW_HAS_STOP(&unpack.tw)) {
                    WT_ERR(__wt_upd_alloc_tombstone(session, &tombstone, &size));
                    tombstone->durable_ts = WT_TS_NONE;
                    tombstone->start_ts = unpack.tw.stop_ts;
                    tombstone->txnid = unpack.tw.stop_txn;
                    tombstone->prepare_state = WT_PREPARE_INPROGRESS;
                    F_SET(tombstone, WT_UPDATE_PREPARE_RESTORED_FROM_DISK);
                    tombstone->next = upd;
                } else {
                    upd->durable_ts = WT_TS_NONE;
                    upd->prepare_state = WT_PREPARE_INPROGRESS;
                    F_SET(upd, WT_UPDATE_PREPARE_RESTORED_FROM_DISK);
                    tombstone = upd;
                }