diff --git a/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/dispensers/MessageProducerOpDispenser.java b/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/dispensers/MessageProducerOpDispenser.java
index 157926bb2..93f4027d3 100644
--- a/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/dispensers/MessageProducerOpDispenser.java
+++ b/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/dispensers/MessageProducerOpDispenser.java
@@ -22,6 +22,7 @@ import io.nosqlbench.adapter.kafka.ops.KafkaOp;
 import io.nosqlbench.adapter.kafka.ops.OpTimeTrackKafkaClient;
 import io.nosqlbench.adapter.kafka.ops.OpTimeTrackKafkaProducer;
 import io.nosqlbench.adapter.kafka.util.KafkaAdapterUtil;
+import io.nosqlbench.adapter.pulsar.util.PulsarAdapterUtil;
 import io.nosqlbench.engine.api.activityimpl.uniform.DriverAdapter;
 import io.nosqlbench.engine.api.templating.ParsedOp;
 import org.apache.commons.lang3.StringUtils;
@@ -34,6 +35,14 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.Properties;
 import java.util.function.LongFunction;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Arrays;
+import java.util.Optional;
+import java.util.Collections;
+import java.util.LinkedHashSet;
 
 public class MessageProducerOpDispenser extends KafkaBaseOpDispenser {
 
@@ -49,12 +58,18 @@ public class MessageProducerOpDispenser extends KafkaBaseOpDispenser {
     private final LongFunction<String> msgHeaderJsonStrFunc;
     private final LongFunction<String> msgKeyStrFunc;
     private final LongFunction<String> msgValueStrFunc;
+    protected final LongFunction<Boolean> seqTrackingFunc;
+    protected final LongFunction<Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE>> msgSeqErrSimuTypeSetFunc;
 
     public MessageProducerOpDispenser(DriverAdapter adapter,
                                       ParsedOp op,
                                       LongFunction<String> tgtNameFunc,
                                       KafkaSpace kafkaSpace) {
         super(adapter, op, tgtNameFunc, kafkaSpace);
+        // Doc-level parameter: seq_tracking
+        this.seqTrackingFunc = lookupStaticBoolConfigValueFunc(
+            PulsarAdapterUtil.DOC_LEVEL_PARAMS.SEQ_TRACKING.label, false);
+        this.msgSeqErrSimuTypeSetFunc = getStaticErrSimuTypeSetOpValueFunc();
 
         this.producerClientConfMap.putAll(kafkaSpace.getKafkaClientConf().getProducerConfMap());
         producerClientConfMap.put("bootstrap.servers", kafkaSpace.getBootstrapSvr());
@@ -126,6 +141,8 @@ public class MessageProducerOpDispenser extends KafkaBaseOpDispenser {
                 asyncAPI,
                 transactionEnabled,
                 txnBatchNum,
+                seqTrackingFunc.apply(cycle),
+                msgSeqErrSimuTypeSetFunc.apply(cycle),
                 producer);
             kafkaSpace.addOpTimeTrackKafkaClient(cacheKey, opTimeTrackKafkaClient);
         }
@@ -208,4 +225,28 @@ public class MessageProducerOpDispenser extends KafkaBaseOpDispenser {
             opTimeTrackKafkaProducer,
             message);
     }
+
+    protected LongFunction<Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE>> getStaticErrSimuTypeSetOpValueFunc() {
+        LongFunction<Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE>> setStringLongFunction;
+        setStringLongFunction = (l) ->
+            parsedOp.getOptionalStaticValue(PulsarAdapterUtil.DOC_LEVEL_PARAMS.SEQERR_SIMU.label, String.class)
+                .filter(Predicate.not(String::isEmpty))
+                .map(value -> {
+                    Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE> set = new HashSet<>();
+
+                    if (StringUtils.contains(value,',')) {
+                        set = Arrays.stream(value.split(","))
+                            .map(PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE::parseSimuType)
+                            .filter(Optional::isPresent)
+                            .map(Optional::get)
+                            .collect(Collectors.toCollection(LinkedHashSet::new));
+                    }
+
+                    return set;
+                }).orElse(Collections.emptySet());
+        logger.info(
+            PulsarAdapterUtil.DOC_LEVEL_PARAMS.SEQERR_SIMU.label + ": {}",
+            setStringLongFunction.apply(0));
+        return setStringLongFunction;
+    }
 }
diff --git a/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/ops/OpTimeTrackKafkaProducer.java b/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/ops/OpTimeTrackKafkaProducer.java
index d44265891..b3be470fb 100644
--- a/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/ops/OpTimeTrackKafkaProducer.java
+++ b/adapter-kafka/src/main/java/io/nosqlbench/adapter/kafka/ops/OpTimeTrackKafkaProducer.java
@@ -20,6 +20,8 @@ package io.nosqlbench.adapter.kafka.ops;
 import io.nosqlbench.adapter.kafka.KafkaSpace;
 import io.nosqlbench.adapter.kafka.exception.KafkaAdapterUnexpectedException;
 import io.nosqlbench.adapter.kafka.util.KafkaAdapterUtil;
+import io.nosqlbench.adapter.pulsar.util.MessageSequenceNumberSendingHandler;
+import io.nosqlbench.adapter.pulsar.util.PulsarAdapterUtil;
 import org.apache.kafka.clients.producer.Callback;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
@@ -31,6 +33,9 @@ import org.apache.kafka.common.errors.ProducerFencedException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
+import java.util.Map;
+import java.util.HashMap;
+import java.util.Set;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Future;
 import org.apache.kafka.common.errors.TimeoutException;
@@ -45,6 +50,10 @@ public class OpTimeTrackKafkaProducer extends OpTimeTrackKafkaClient {
     private final boolean asyncMsgAck;
     private final boolean transactEnabledConfig;
     private final int txnBatchNum;
+    private ThreadLocal<Map<String, MessageSequenceNumberSendingHandler>> MessageSequenceNumberSendingHandlersThreadLocal =
+        ThreadLocal.withInitial(HashMap::new);
+    private final boolean seqTracking;
+    private final Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE> errSimuTypeSet;
 
     enum TxnProcResult {
         SUCCESS,
@@ -67,11 +76,15 @@ public class OpTimeTrackKafkaProducer extends OpTimeTrackKafkaClient {
                                     boolean asyncMsgAck,
                                     boolean transactEnabledConfig,
                                     int txnBatchNum,
+                                    boolean seqTracking,
+                                    Set<PulsarAdapterUtil.MSG_SEQ_ERROR_SIMU_TYPE> errSimuTypeSet,
                                     KafkaProducer<String, String> producer) {
         super(kafkaSpace);
         this.asyncMsgAck = asyncMsgAck;
         this.transactEnabledConfig = transactEnabledConfig;
         this.txnBatchNum = txnBatchNum;
+        this.seqTracking = seqTracking;
+        this.errSimuTypeSet = errSimuTypeSet;
         this.transactionEnabled = transactEnabledConfig && (txnBatchNum > 2);
         this.producer = producer;
     }
@@ -193,6 +206,11 @@ public class OpTimeTrackKafkaProducer extends OpTimeTrackKafkaClient {
         }
 
         ProducerRecord<String, String> message = (ProducerRecord<String, String>) cycleObj;
+        if (seqTracking) {
+            long nextSequenceNumber = getMessageSequenceNumberSendingHandler(message.topic())
+                .getNextSequenceNumber(errSimuTypeSet);
+            message.headers().add(PulsarAdapterUtil.MSG_SEQUENCE_NUMBER, String.valueOf(nextSequenceNumber).getBytes());
+        }
         try {
             if (result == TxnProcResult.SUCCESS) {
                 Future<RecordMetadata> responseFuture = producer.send(message, new Callback() {
@@ -261,4 +279,9 @@ public class OpTimeTrackKafkaProducer extends OpTimeTrackKafkaClient {
             e.printStackTrace();
         }
     }
+
+    private MessageSequenceNumberSendingHandler getMessageSequenceNumberSendingHandler(String topicName) {
+        return MessageSequenceNumberSendingHandlersThreadLocal.get()
+            .computeIfAbsent(topicName, k -> new MessageSequenceNumberSendingHandler());
+    }
 }