diff --git a/api/src/main/java/org/openmrs/module/queue/model/Queue.java b/api/src/main/java/org/openmrs/module/queue/model/Queue.java
index 6dcc0631..81f9acfa 100644
--- a/api/src/main/java/org/openmrs/module/queue/model/Queue.java
+++ b/api/src/main/java/org/openmrs/module/queue/model/Queue.java
@@ -50,11 +50,11 @@ public class Queue extends BaseChangeableOpenmrsMetadata {
 	private Integer queueId;
 	
 	@ManyToOne
-	@JoinColumn(name = "location_id", nullable = false)
+	@JoinColumn(name = "location_id")
 	private Location location;
 	
 	@ManyToOne
-	@JoinColumn(name = "service", referencedColumnName = "concept_id", nullable = false)
+	@JoinColumn(name = "service", referencedColumnName = "concept_id")
 	private Concept service;
 	
 	@ManyToOne
diff --git a/api/src/main/java/org/openmrs/module/queue/validators/QueueValidator.java b/api/src/main/java/org/openmrs/module/queue/validators/QueueValidator.java
index 32d53290..6ee3b287 100644
--- a/api/src/main/java/org/openmrs/module/queue/validators/QueueValidator.java
+++ b/api/src/main/java/org/openmrs/module/queue/validators/QueueValidator.java
@@ -39,18 +39,17 @@ public void validate(Object target, Errors errors) {
 		}
 		Queue queue = (Queue) target;
 		ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "queue.name.null", "Queue name can't be null");
-		ValidationUtils.rejectIfEmptyOrWhitespace(errors, "location", "queue.location.null", "Location can't be null");
 		
 		// TODO: Check if the location is tagged as a Queue Location?
 		
 		QueueServicesWrapper queueServices = Context.getRegisteredComponents(QueueServicesWrapper.class).get(0);
 		if (queue.getService() == null) {
-			errors.rejectValue("service", "QueueEntry.service.null", "The property service should not be null");
-		} else {
-			if (!queueServices.getAllowedServices().contains(queue.getService())) {
-				errors.rejectValue("service", "Queue.service.invalid",
-				    "The property service should be a member of configured queue service conceptSet.");
-			}
+			return;
+		}
+		
+		if (!queueServices.getAllowedServices().contains(queue.getService())) {
+			errors.rejectValue("service", "Queue.service.invalid",
+			    "The property service should be a member of configured queue service conceptSet.");
 		}
 	}
 }
diff --git a/api/src/main/resources/liquibase.xml b/api/src/main/resources/liquibase.xml
index 27e2e7cb..36087217 100644
--- a/api/src/main/resources/liquibase.xml
+++ b/api/src/main/resources/liquibase.xml
@@ -26,12 +26,8 @@
                 <constraints nullable="false"/>
             </column>
             <column name="description" type="varchar(255)"/>
-            <column name="location_id" type="int">
-                <constraints nullable="false"/>
-            </column>
-            <column name="service" type="int">
-                <constraints nullable="false"/>
-            </column>
+            <column name="location_id" type="int"/>
+            <column name="service" type="int"/>
             <column name="creator" type="int">
                 <constraints nullable="false"/>
             </column>
@@ -460,4 +456,16 @@
         </sql>
     </changeSet>
 
+    <changeSet id="nullable_location_and_service_on_queue_20240329" author="mujuzi">
+        <preConditions onFail="MARK_RAN">
+            <columnExists tableName="queue" columnName="location_id"/>
+            <columnExists tableName="queue" columnName="service"/>
+        </preConditions>
+        <comment>
+            Drop Not-Null constraint from columns queue.location_id and queue.service
+        </comment>
+        <dropNotNullConstraint tableName="queue" columnName="location_id" columnDataType="int"/>
+        <dropNotNullConstraint tableName="queue" columnName="service" columnDataType="int"/>
+    </changeSet>
+
 </databaseChangeLog>
diff --git a/integration-tests/src/test/java/org/openmrs/module/queue/validators/QueueValidatorTest.java b/integration-tests/src/test/java/org/openmrs/module/queue/validators/QueueValidatorTest.java
index d9de2984..f4f6d5fd 100644
--- a/integration-tests/src/test/java/org/openmrs/module/queue/validators/QueueValidatorTest.java
+++ b/integration-tests/src/test/java/org/openmrs/module/queue/validators/QueueValidatorTest.java
@@ -10,9 +10,11 @@
 package org.openmrs.module.queue.validators;
 
 import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThat;
 
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.openmrs.api.context.Context;
 import org.openmrs.module.queue.SpringTestConfiguration;
@@ -22,6 +24,7 @@
 import org.springframework.test.context.ContextConfiguration;
 import org.springframework.validation.BindException;
 import org.springframework.validation.Errors;
+import org.springframework.validation.FieldError;
 
 @ContextConfiguration(classes = SpringTestConfiguration.class, inheritLocations = false)
 public class QueueValidatorTest extends BaseModuleContextSensitiveTest {
@@ -83,6 +86,7 @@ public void shouldSucceedForValidLocation() {
 	}
 	
 	@Test
+	@Ignore("O3-2454: Allow nullable location and service on queue")
 	public void shouldFailForInvalidLocation() {
 		queue.setName("Test Queue");
 		queue.setLocation(Context.getLocationService().getLocationByUuid(BAD_LOCATION_UUID));
@@ -90,4 +94,17 @@ public void shouldFailForInvalidLocation() {
 		validator.validate(queue, errors);
 		assertThat(errors.getAllErrors().size(), equalTo(1));
 	}
+	
+	@Test
+	public void shouldSucceedForNullServiceConceptAndLocation() {
+		queue.setName("Test Queue");
+		queue.setLocation(null);
+		queue.setService(null);
+		validator.validate(queue, errors);
+		
+		FieldError queueServiceFieldError = errors.getFieldError("service");
+		FieldError queueLocationFieldError = errors.getFieldError("location");
+		assertNull(queueServiceFieldError);
+		assertNull(queueLocationFieldError);
+	}
 }