diff --git a/open-liberty/pom.xml b/open-liberty/pom.xml
index 1a9ebeeedb..b01811ff77 100644
--- a/open-liberty/pom.xml
+++ b/open-liberty/pom.xml
@@ -111,7 +111,7 @@
 		<!-- versions -->
 		<version.jakarta.jakartaee-web-api>8.0.0</version.jakarta.jakartaee-web-api>
 		<version.microprofile>3.2</version.microprofile>
-		<version.derby>10.15.1.3</version.derby>
+		<version.derby>10.14.2.0</version.derby>
 		<version.liberty-maven-plugin>3.1</version.liberty-maven-plugin>
 		<version.maven-dependency-plugin>2.10</version.maven-dependency-plugin>
 		<version.maven-war-plugin>3.2.3</version.maven-war-plugin>
@@ -125,6 +125,6 @@
 		<liberty.var.app.context.root>openliberty</liberty.var.app.context.root>
 		<liberty.var.default.http.port>9080</liberty.var.default.http.port>
 		<liberty.var.default.https.port>9443</liberty.var.default.https.port>
-		<testServerHttpPort>9080</testServerHttpPort>
+		<testServerHttpPort>7070</testServerHttpPort>
 	</properties>
 </project>
\ No newline at end of file
diff --git a/open-liberty/src/main/java/com/baeldung/openliberty/person/resource/PersonResource.java b/open-liberty/src/main/java/com/baeldung/openliberty/person/resource/PersonResource.java
index 506214229c..049f4761b5 100644
--- a/open-liberty/src/main/java/com/baeldung/openliberty/person/resource/PersonResource.java
+++ b/open-liberty/src/main/java/com/baeldung/openliberty/person/resource/PersonResource.java
@@ -1,12 +1,8 @@
 package com.baeldung.openliberty.person.resource;
 
-import java.util.Set;
-
 import javax.enterprise.context.RequestScoped;
 import javax.inject.Inject;
 import javax.transaction.Transactional;
-import javax.validation.ConstraintViolation;
-import javax.validation.Validator;
 import javax.ws.rs.Consumes;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
@@ -26,9 +22,6 @@ public class PersonResource {
     @Inject
     private PersonDao personDao;
 
-    @Inject
-    Validator validator;
-
     @GET
     @Produces(MediaType.APPLICATION_JSON)
     public Person getPerson() {
@@ -40,18 +33,6 @@ public class PersonResource {
     @Consumes(MediaType.APPLICATION_JSON)
     @Transactional
     public Response addPerson(Person person) {
-        Set<ConstraintViolation<Person>> violations = validator.validate(person);
-        if (violations.size() > 0) {
-            StringBuilder sb = new StringBuilder();
-            sb.append("Constraint Violation Found: ").append(System.lineSeparator());
-            for (ConstraintViolation<Person> violation : violations) {
-                sb.append(violation.getPropertyPath())
-                  .append(" ")
-                  .append(violation.getMessage())
-                  .append(System.lineSeparator());
-            }
-            return Response.status(Response.Status.BAD_REQUEST).entity(sb.toString()).build();
-        }
         personDao.createPerson(person);
         String respMessage = "Person #" + person.getId() + " created successfully.";
         return Response.status(Response.Status.OK).entity(respMessage).build();
diff --git a/open-liberty/src/main/java/com/baeldung/openliberty/rest/consumes/RestConsumer.java b/open-liberty/src/main/java/com/baeldung/openliberty/rest/consumes/RestConsumer.java
index a3b548672b..8073c408dd 100644
--- a/open-liberty/src/main/java/com/baeldung/openliberty/rest/consumes/RestConsumer.java
+++ b/open-liberty/src/main/java/com/baeldung/openliberty/rest/consumes/RestConsumer.java
@@ -1,13 +1,9 @@
 package com.baeldung.openliberty.rest.consumes;
 
-import java.net.URI;
-
 import javax.ws.rs.client.Client;
 import javax.ws.rs.client.ClientBuilder;
 import javax.ws.rs.core.Response;
 
-import org.eclipse.microprofile.rest.client.RestClientBuilder;
-
 public class RestConsumer {
 
     public static String consumeWithJsonb(String targetUrl) {
@@ -19,12 +15,4 @@ public class RestConsumer {
         return result;
     }
 
-    public static String consumeWithRestBuilder(String targetUrl) {
-        URI target = URI.create(targetUrl);
-        PersonClient person = RestClientBuilder.newBuilder()
-          .baseUri(target)
-          .build(PersonClient.class);
-        return person.getPerson();
-    }
-
 }
diff --git a/open-liberty/src/main/liberty/config/server.xml b/open-liberty/src/main/liberty/config/server.xml
index fd970feb45..bc99905058 100644
--- a/open-liberty/src/main/liberty/config/server.xml
+++ b/open-liberty/src/main/liberty/config/server.xml
@@ -7,12 +7,8 @@
         <feature>jsonb-1.0</feature>
         <feature>cdi-2.0</feature>
         <feature>jpa-2.2</feature>
-        <feature>beanValidation-2.0</feature>
-        <feature>mpRestClient-1.3</feature>
     </featureManager>
 
-    <keyStore id="defaultKeyStore" password="Liberty" />
-
     <webApplication location="open-liberty.war" contextRoot="/" />
 
     <logging traceSpecification="com.ibm.ws.microprofile.health.*=all" hideMessage="SRVE9967W" />
@@ -20,8 +16,7 @@
     <httpEndpoint host="*" httpPort="${default.http.port}" httpsPort="${default.https.port}" id="defaultHttpEndpoint" />
 
     <library id="derbyJDBCLib">
-        <!-- <fileset dir="${project.build.directory}/open-liberty/WEB-INF/lib" includes="derby*.jar" /> -->
-        <fileset dir="/Users/anshulbansal/eclipse-workspace/tutorials/open-liberty/target/open-liberty/WEB-INF/lib" includes="derby*.jar" />
+        <fileset dir="${shared.resource.dir}" includes="derby*.jar"/> 
     </library>
 
     <!-- Datasource Configuration -->
diff --git a/open-liberty/src/test/java/com/baeldung/openliberty/RestClientTest.java b/open-liberty/src/test/java/com/baeldung/openliberty/RestClientTest.java
index 7925dcad9e..ab024d788a 100644
--- a/open-liberty/src/test/java/com/baeldung/openliberty/RestClientTest.java
+++ b/open-liberty/src/test/java/com/baeldung/openliberty/RestClientTest.java
@@ -23,9 +23,8 @@ public class RestClientTest {
     
     @Test
     public void testSuite() {
-        //uncomment when liberty server starts
+        //run the test only when liberty server is started
         //this.whenConsumeWithJsonb_thenGetPerson();
-        //this.whenConsumeWithRestBuilder_thenGetPerson();
     }
 
     public void whenConsumeWithJsonb_thenGetPerson() {
@@ -38,13 +37,4 @@ public class RestClientTest {
         assertEquals(person.getEmail(), "normanlewis@email.com");
     }
 
-    public void whenConsumeWithRestBuilder_thenGetPerson() {
-        String result = RestConsumer.consumeWithRestBuilder(BASE_URL);   
-
-        Person person = JsonbBuilder.create().fromJson(result, Person.class);
-        assert person.getId() == 1;
-        assertEquals(person.getUsername(), "normanlewis");
-        assertEquals(person.getEmail(), "normanlewis@email.com");
-    }
-
 }