lass="id_link">#</a></h3></div></div></div><p>
    <a class="link" href="runtime-config-wal.html#GUC-WAL-LEVEL"><code class="varname">wal_level</code></a> must be
    set to <code class="literal">logical</code>.
   </p><p>
    <a class="link" href="runtime-config-replication.html#GUC-MAX-REPLICATION-SLOTS"><code class="varname">max_replication_slots</code></a>
    must be set to at least the number of subscriptions expected to connect,
    plus some reserve for table synchronization.
   </p><p>
    <a class