When a single-statement retryable write occurs during PDIB, the resulting applyOps oplog entry must have multiOpType: 2 (kApplyOpsAppliedAtomically), carry lsid/txnNumber/prevOpTime, and contain both the user operation and container side write inner ops. The config.transactions entry on both primary and secondary must not have state: "committed" (which would indicate the SessionUpdateTracker misidentified it as a multi-document transaction). Primary and secondary data must match after replication.