diff --git a/src/groups/mqb/mqbblp/mqbblp_remotequeue.cpp b/src/groups/mqb/mqbblp/mqbblp_remotequeue.cpp
index bf411902a..30595ba0c 100644
--- a/src/groups/mqb/mqbblp/mqbblp_remotequeue.cpp
+++ b/src/groups/mqb/mqbblp/mqbblp_remotequeue.cpp
@@ -64,6 +64,16 @@
 namespace BloombergLP {
 namespace mqbblp {
 
+namespace {
+
+/// The default timeout for scheduled PUT expiration clean-up event.
+static const bsls::Types::Int64 k_DEFAULT_PUT_EXPIRATION_TIMEOUT_MINUTES = 5;
+static const bsls::Types::Int64 k_DEFAULT_PUT_EXPIRATION_TIMEOUT_NS =
+    k_DEFAULT_PUT_EXPIRATION_TIMEOUT_MINUTES *
+    bdlt::TimeUnitRatio::k_NANOSECONDS_PER_MINUTE;
+
+}  // close unnamed namespace
+
 // -----------------
 // class RemoteQueue
 // -----------------
@@ -366,7 +376,7 @@ void RemoteQueue::pushMessage(
 
             if (result != mqbi::StorageResult::e_SUCCESS) {
                 if (d_throttledFailedPushMessages.requestPermission()) {
-                    BALL_LOG_WARN << d_state_p->uri()
+                    BALL_LOG_WARN << "[THROTTLED] " << d_state_p->uri()
                                   << " failed to store broadcast PUSH ["
                                   << msgGUID << "], result = " << result;
                 }
@@ -483,6 +493,18 @@ RemoteQueue::RemoteQueue(QueueState*       state,
     os << '@' << d_state_p->uri().asString();
     d_state_p->setDescription(os.str());
 
+    if (deduplicationTimeMs <= 0) {
+        d_pendingPutsTimeoutNs = k_DEFAULT_PUT_EXPIRATION_TIMEOUT_NS;
+        BALL_LOG_WARN << "Remote queue [" << d_state_p->description()
+                      << "]: cannot schedule PUT expiration timer with a "
+                      << "non-positive timeout from config ["
+                      << deduplicationTimeMs << " ms], use a default PUT "
+                      << "expiration timeout for scheduler instead ["
+                      << bmqu::PrintUtil::prettyTimeInterval(
+                             d_pendingPutsTimeoutNs)
+                      << "]";
+    }
+
     BALL_LOG_INFO << "Remote queue: " << d_state_p->uri()
                   << " [id: " << d_state_p->id() << "]";
 }
@@ -676,10 +698,10 @@ void RemoteQueue::onHandleReleased(
              it != d_pendingConfirms.end();) {
             if (it->d_handle == handle.get()) {
                 if (d_throttledFailedConfirmMessages.requestPermission()) {
-                    BALL_LOG_WARN << "Dropping CONFIRM because downstream ["
-                                  << handle << "] is gone. [queue: '"
-                                  << d_state_p->description() << "', GUID: '"
-                                  << it->d_guid << "']";
+                    BALL_LOG_WARN << "[THROTTLED] Dropping CONFIRM because "
+                                  << "downstream [" << handle << "] is gone. "
+                                  << "[queue: '" << d_state_p->description()
+                                  << "', GUID: '" << it->d_guid << "']";
                 }
                 it = d_pendingConfirms.erase(it);
                 ++numProcessed;
@@ -865,7 +887,7 @@ void RemoteQueue::postMessage(const bmqp::PutHeader&              putHeaderIn,
 
         if (d_throttledFailedPutMessages.requestPermission()) {
             BALL_LOG_WARN
-                << "#CLIENT_IMPROPER_BEHAVIOR "
+                << "[THROTTLED] #CLIENT_IMPROPER_BEHAVIOR "
                 << "Failed PUT message for queue [" << d_state_p->uri()
                 << "] from client [" << source->client()->description()
                 << "]. Queue not opened in WRITE mode by the client.";
@@ -1152,7 +1174,7 @@ void RemoteQueue::onAckMessageDispatched(const mqbi::DispatcherAckEvent& event)
 
         if (d_throttledFailedAckMessages.requestPermission()) {
             BALL_LOG_STREAM(severity)
-                << "Received ACK message [" << ackResult
+                << "[THROTTLED] Received ACK message [" << ackResult
                 << ", queue: " << d_state_p->description()
                 << "] for unknown guid: " << ackMessage.messageGUID();
         }
@@ -1313,7 +1335,7 @@ void RemoteQueue::expirePendingMessagesDispatched()
 
     if (numExpired) {
         if (d_throttledFailedPutMessages.requestPermission()) {
-            BALL_LOG_INFO << "[THROTTLED] " << d_state_p->uri() << ": expired "
+            BALL_LOG_WARN << "[THROTTLED] " << d_state_p->uri() << ": expired "
                           << bmqu::PrintUtil::prettyNumber(numExpired)
                           << " pending PUT messages ("
                           << bmqu::PrintUtil::prettyNumber(numMessages -