a
      violates any constraints, logical replication will stop until it is
      resolved.  By using the <code class="command">ALTER SUBSCRIPTION ... SKIP</code> command,
      the logical replication worker skips all data modification changes within
      the transaction.  This option has no effect on the transactions that are
      already prepared by enabling
      <a class="link" href="sql-createsubscription.html#SQL-CREATESUBSCRIPTION-WITH-TWO-PHASE"><code class="literal">two_phase</code></a>
      on