diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcher.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcher.java
index c0287bda0..7f82f9a2b 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcher.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/UpdateMatcher.java
@@ -1,13 +1,14 @@
 
 package eu.dnetlib.dhp.broker.oa.matchers;
 
-import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.function.BiConsumer;
 import java.util.function.Function;
+import java.util.stream.Collectors;
 
 import org.apache.commons.codec.digest.DigestUtils;
 import org.apache.commons.lang3.StringUtils;
@@ -19,15 +20,15 @@ import eu.dnetlib.pace.config.DedupConfig;
 
 public abstract class UpdateMatcher<T> {
 
-	private final boolean multipleUpdate;
+	private final int maxNumber;
 	private final Function<T, Topic> topicFunction;
 	private final BiConsumer<OaBrokerMainEntity, T> compileHighlightFunction;
 	private final Function<T, String> highlightToStringFunction;
 
-	public UpdateMatcher(final boolean multipleUpdate, final Function<T, Topic> topicFunction,
+	public UpdateMatcher(final int maxNumber, final Function<T, Topic> topicFunction,
 		final BiConsumer<OaBrokerMainEntity, T> compileHighlightFunction,
 		final Function<T, String> highlightToStringFunction) {
-		this.multipleUpdate = multipleUpdate;
+		this.maxNumber = maxNumber;
 		this.topicFunction = topicFunction;
 		this.compileHighlightFunction = compileHighlightFunction;
 		this.highlightToStringFunction = highlightToStringFunction;
@@ -57,17 +58,19 @@ public abstract class UpdateMatcher<T> {
 			}
 		}
 
-		final Collection<UpdateInfo<T>> values = infoMap.values();
+		final List<UpdateInfo<T>> values = infoMap
+			.values()
+			.stream()
+			.sorted((o1, o2) -> Float.compare(o2.getTrust(), o1.getTrust())) // DESCENDING
+			.collect(Collectors.toList());
 
-		if (values.isEmpty() || multipleUpdate) {
-			return values;
+		if (values.isEmpty()) {
+			return new ArrayList<>();
+		} else if (values.size() > maxNumber) {
+			System.err.println("Too many events (" + values.size() + ") matched by " + getClass().getSimpleName());
+			return values.subList(0, maxNumber);
 		} else {
-			final UpdateInfo<T> v = values
-				.stream()
-				.sorted((o1, o2) -> Float.compare(o1.getTrust(), o2.getTrust()))
-				.findFirst()
-				.get();
-			return Arrays.asList(v);
+			return values;
 		}
 	}
 
@@ -81,8 +84,8 @@ public abstract class UpdateMatcher<T> {
 		return StringUtils.isBlank(field);
 	}
 
-	public boolean isMultipleUpdate() {
-		return multipleUpdate;
+	public int getMaxNumber() {
+		return maxNumber;
 	}
 
 	public Function<T, Topic> getTopicFunction() {
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedDatasets/AbstractEnrichMissingDataset.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedDatasets/AbstractEnrichMissingDataset.java
index c8b93596a..f21c1c7b3 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedDatasets/AbstractEnrichMissingDataset.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedDatasets/AbstractEnrichMissingDataset.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public abstract class AbstractEnrichMissingDataset extends UpdateMatcher<OaBrokerRelatedDataset> {
 
 	public AbstractEnrichMissingDataset(final Topic topic) {
-		super(true,
+		super(10,
 			rel -> topic,
 			(p, rel) -> p.getDatasets().add(rel),
 			rel -> rel.getOpenaireId());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMissingProject.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMissingProject.java
index 49c546bba..4b563d381 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMissingProject.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMissingProject.java
@@ -12,7 +12,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingProject extends UpdateMatcher<OaBrokerProject> {
 
 	public EnrichMissingProject() {
-		super(true,
+		super(20,
 			prj -> Topic.ENRICH_MISSING_PROJECT,
 			(p, prj) -> p.getProjects().add(prj),
 			prj -> prj.getFunder() + "::" + prj.getFundingProgram() + prj.getCode());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
index 6954a3fb5..85b2cbe28 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedProjects/EnrichMoreProject.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMoreProject extends UpdateMatcher<OaBrokerProject> {
 
 	public EnrichMoreProject() {
-		super(true,
+		super(20,
 			prj -> Topic.ENRICH_MORE_PROJECT,
 			(p, prj) -> p.getProjects().add(prj),
 			prj -> projectAsString(prj));
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedPublications/AbstractEnrichMissingPublication.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedPublications/AbstractEnrichMissingPublication.java
index cc4f68f87..f951131b1 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedPublications/AbstractEnrichMissingPublication.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedPublications/AbstractEnrichMissingPublication.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public abstract class AbstractEnrichMissingPublication extends UpdateMatcher<OaBrokerRelatedPublication> {
 
 	public AbstractEnrichMissingPublication(final Topic topic) {
-		super(true,
+		super(10,
 			rel -> topic,
 			(p, rel) -> p.getPublications().add(rel),
 			rel -> rel.getOpenaireId());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMissingSoftware.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMissingSoftware.java
index d01f0c370..a638024bc 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMissingSoftware.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMissingSoftware.java
@@ -13,7 +13,7 @@ public class EnrichMissingSoftware
 	extends UpdateMatcher<OaBrokerRelatedSoftware> {
 
 	public EnrichMissingSoftware() {
-		super(true,
+		super(10,
 			s -> Topic.ENRICH_MISSING_SOFTWARE,
 			(p, s) -> p.getSoftwares().add(s),
 			s -> s.getOpenaireId());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMoreSoftware.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMoreSoftware.java
index a612b6074..2bc370187 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMoreSoftware.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/relatedSoftware/EnrichMoreSoftware.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMoreSoftware extends UpdateMatcher<OaBrokerRelatedSoftware> {
 
 	public EnrichMoreSoftware() {
-		super(true,
+		super(10,
 			s -> Topic.ENRICH_MORE_SOFTWARE,
 			(p, s) -> p.getSoftwares().add(s),
 			s -> s.getOpenaireId());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAbstract.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAbstract.java
index 73462bae8..b61696e45 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAbstract.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAbstract.java
@@ -12,7 +12,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingAbstract extends UpdateMatcher<String> {
 
 	public EnrichMissingAbstract() {
-		super(false,
+		super(1,
 			s -> Topic.ENRICH_MISSING_ABSTRACT,
 			(p, s) -> p.getAbstracts().add(s),
 			s -> s);
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAuthorOrcid.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAuthorOrcid.java
index 2a01188a9..7bbc43fe3 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAuthorOrcid.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingAuthorOrcid.java
@@ -15,7 +15,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingAuthorOrcid extends UpdateMatcher<OaBrokerAuthor> {
 
 	public EnrichMissingAuthorOrcid() {
-		super(true,
+		super(40,
 			aut -> Topic.ENRICH_MISSING_AUTHOR_ORCID,
 			(p, aut) -> p.getCreators().add(aut),
 			aut -> aut.getOrcid());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingOpenAccess.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingOpenAccess.java
index 487382957..41a00dcd1 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingOpenAccess.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingOpenAccess.java
@@ -14,7 +14,7 @@ import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 public class EnrichMissingOpenAccess extends UpdateMatcher<OaBrokerInstance> {
 
 	public EnrichMissingOpenAccess() {
-		super(true,
+		super(20,
 			i -> Topic.ENRICH_MISSING_OA_VERSION,
 			(p, i) -> p.getInstances().add(i),
 			OaBrokerInstance::getUrl);
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPid.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPid.java
index ee1617b1e..4863bdeb7 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPid.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPid.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingPid extends UpdateMatcher<OaBrokerTypedValue> {
 
 	public EnrichMissingPid() {
-		super(true,
+		super(10,
 			pid -> Topic.ENRICH_MISSING_PID,
 			(p, pid) -> p.getPids().add(pid),
 			pid -> pid.getType() + "::" + pid.getValue());
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPublicationDate.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPublicationDate.java
index 2c0533fa3..e7b65dad8 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPublicationDate.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingPublicationDate.java
@@ -12,7 +12,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingPublicationDate extends UpdateMatcher<String> {
 
 	public EnrichMissingPublicationDate() {
-		super(false,
+		super(1,
 			date -> Topic.ENRICH_MISSING_PUBLICATION_DATE,
 			(p, date) -> p.setPublicationdate(date),
 			s -> s);
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingSubject.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingSubject.java
index 9ab9fce48..f762e3f52 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingSubject.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMissingSubject.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMissingSubject extends UpdateMatcher<OaBrokerTypedValue> {
 
 	public EnrichMissingSubject() {
-		super(true,
+		super(20,
 			s -> Topic.fromPath("ENRICH/MISSING/SUBJECT/" + s.getType()),
 			(p, s) -> p.getSubjects().add(s),
 			s -> subjectAsString(s));
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreOpenAccess.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreOpenAccess.java
index e90a8f201..9ce362a97 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreOpenAccess.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreOpenAccess.java
@@ -14,7 +14,7 @@ import eu.dnetlib.dhp.broker.oa.util.BrokerConstants;
 public class EnrichMoreOpenAccess extends UpdateMatcher<OaBrokerInstance> {
 
 	public EnrichMoreOpenAccess() {
-		super(true,
+		super(20,
 			i -> Topic.ENRICH_MORE_OA_VERSION,
 			(p, i) -> p.getInstances().add(i),
 			OaBrokerInstance::getUrl);
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMorePid.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMorePid.java
index 43b4f0628..583960037 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMorePid.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMorePid.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMorePid extends UpdateMatcher<OaBrokerTypedValue> {
 
 	public EnrichMorePid() {
-		super(true,
+		super(20,
 			pid -> Topic.ENRICH_MORE_PID,
 			(p, pid) -> p.getPids().add(pid),
 			pid -> pidAsString(pid));
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreSubject.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreSubject.java
index 97b289b69..150029462 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreSubject.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/matchers/simple/EnrichMoreSubject.java
@@ -13,7 +13,7 @@ import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
 public class EnrichMoreSubject extends UpdateMatcher<OaBrokerTypedValue> {
 
 	public EnrichMoreSubject() {
-		super(true,
+		super(20,
 			s -> Topic.fromPath("ENRICH/MORE/SUBJECT/" + s.getType()),
 			(p, s) -> p.getSubjects().add(s),
 			s -> subjectAsString(s));
diff --git a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/EventFinder.java b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/EventFinder.java
index 1a3f514e8..e142b5904 100644
--- a/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/EventFinder.java
+++ b/dhp-workflows/dhp-broker-events/src/main/java/eu/dnetlib/dhp/broker/oa/util/EventFinder.java
@@ -7,7 +7,16 @@ import java.util.List;
 import eu.dnetlib.broker.objects.OaBrokerMainEntity;
 import eu.dnetlib.dhp.broker.model.EventFactory;
 import eu.dnetlib.dhp.broker.oa.matchers.UpdateMatcher;
+import eu.dnetlib.dhp.broker.oa.matchers.relatedProjects.EnrichMissingProject;
 import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingAbstract;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingAuthorOrcid;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingOpenAccess;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingPid;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingPublicationDate;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMissingSubject;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMoreOpenAccess;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMorePid;
+import eu.dnetlib.dhp.broker.oa.matchers.simple.EnrichMoreSubject;
 import eu.dnetlib.dhp.broker.oa.util.aggregators.simple.ResultGroup;
 import eu.dnetlib.pace.config.DedupConfig;
 
@@ -16,17 +25,17 @@ public class EventFinder {
 	private static List<UpdateMatcher<?>> matchers = new ArrayList<>();
 	static {
 		matchers.add(new EnrichMissingAbstract());
-		// matchers.add(new EnrichMissingAuthorOrcid());
-		// matchers.add(new EnrichMissingOpenAccess());
-		// matchers.add(new EnrichMissingPid());
-		// matchers.add(new EnrichMissingPublicationDate());
-		// matchers.add(new EnrichMissingSubject());
-		// matchers.add(new EnrichMoreOpenAccess());
-		// matchers.add(new EnrichMorePid());
-		// matchers.add(new EnrichMoreSubject());
+		matchers.add(new EnrichMissingAuthorOrcid());
+		matchers.add(new EnrichMissingOpenAccess());
+		matchers.add(new EnrichMissingPid());
+		matchers.add(new EnrichMissingPublicationDate());
+		matchers.add(new EnrichMissingSubject());
+		matchers.add(new EnrichMoreOpenAccess());
+		matchers.add(new EnrichMorePid());
+		matchers.add(new EnrichMoreSubject());
 
 		// // Advanced matchers
-		// matchers.add(new EnrichMissingProject());
+		matchers.add(new EnrichMissingProject());
 		// matchers.add(new EnrichMoreProject());
 		// matchers.add(new EnrichMissingSoftware());
 		// matchers.add(new EnrichMoreSoftware());