diff --git a/dhis-2/dhis-services/dhis-service-tracker/src/main/java/org/hisp/dhis/tracker/export/PageParams.java b/dhis-2/dhis-services/dhis-service-tracker/src/main/java/org/hisp/dhis/tracker/export/PageParams.java
index c001f397e9a0..0b999e98bbe0 100644
--- a/dhis-2/dhis-services/dhis-service-tracker/src/main/java/org/hisp/dhis/tracker/export/PageParams.java
+++ b/dhis-2/dhis-services/dhis-service-tracker/src/main/java/org/hisp/dhis/tracker/export/PageParams.java
@@ -27,15 +27,22 @@
  */
 package org.hisp.dhis.tracker.export;
 
+import java.util.Objects;
 import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.ToString;
 
-/** {@link PageParams} represent the parameters that configure the page of items to be returned. */
+/**
+ * {@link PageParams} represent the parameters that configure the page of items to be returned. By
+ * default, the total number of items will not be fetched.
+ */
 @Getter
 @ToString
 @EqualsAndHashCode
 public class PageParams {
+  private static final int DEFAULT_PAGE = 1;
+  private static final int DEFAULT_PAGE_SIZE = 50;
+
   /** The page number to be returned. */
   final int page;
 
@@ -46,8 +53,8 @@ public class PageParams {
   final boolean pageTotal;
 
   public PageParams(Integer page, Integer pageSize, Boolean pageTotal) {
-    this.page = page;
-    this.pageSize = pageSize;
+    this.page = Objects.requireNonNullElse(page, DEFAULT_PAGE);
+    this.pageSize = Objects.requireNonNullElse(pageSize, DEFAULT_PAGE_SIZE);
     this.pageTotal = Boolean.TRUE.equals(pageTotal);
   }
 }
diff --git a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/enrollment/EnrollmentRequestParams.java b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/enrollment/EnrollmentRequestParams.java
index 5677296793d0..855d445639c4 100644
--- a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/enrollment/EnrollmentRequestParams.java
+++ b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/enrollment/EnrollmentRequestParams.java
@@ -49,15 +49,22 @@
 import org.hisp.dhis.webapi.controller.tracker.view.TrackedEntity;
 
 /** Represents query parameters sent to {@link EnrollmentsExportController}. */
+@OpenApi.Shared(name = "EnrollmentRequestParams")
 @OpenApi.Property
 @Data
 @NoArgsConstructor
 public class EnrollmentRequestParams implements PageRequestParams {
   static final String DEFAULT_FIELDS_PARAM = "*,!relationships,!events,!attributes";
 
-  private Integer page = 1;
-  private Integer pageSize = 50;
+  @OpenApi.Property(defaultValue = "1")
+  private Integer page;
+
+  @OpenApi.Property(defaultValue = "50")
+  private Integer pageSize;
+
+  @OpenApi.Property(defaultValue = "false")
   private Boolean totalPages = false;
+
   private Boolean skipPaging = false;
 
   private List<OrderCriteria> order = new ArrayList<>();
diff --git a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/event/EventRequestParams.java b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/event/EventRequestParams.java
index 228c5eaa4019..5f3d53f7e963 100644
--- a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/event/EventRequestParams.java
+++ b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/event/EventRequestParams.java
@@ -60,15 +60,22 @@
  *
  * @author Giuseppe Nespolino <g.nespolino@gmail.com>
  */
+@OpenApi.Shared(name = "EventRequestParams")
 @OpenApi.Property
 @Data
 @NoArgsConstructor
 public class EventRequestParams implements PageRequestParams {
   static final String DEFAULT_FIELDS_PARAM = "*,!relationships";
 
-  private Integer page = 1;
-  private Integer pageSize = 50;
+  @OpenApi.Property(defaultValue = "1")
+  private Integer page;
+
+  @OpenApi.Property(defaultValue = "50")
+  private Integer pageSize;
+
+  @OpenApi.Property(defaultValue = "false")
   private Boolean totalPages = false;
+
   private Boolean skipPaging = false;
 
   private List<OrderCriteria> order = new ArrayList<>();
diff --git a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/relationship/RelationshipRequestParams.java b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/relationship/RelationshipRequestParams.java
index 213962fa8355..92aeca616728 100644
--- a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/relationship/RelationshipRequestParams.java
+++ b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/relationship/RelationshipRequestParams.java
@@ -41,6 +41,7 @@
 import org.hisp.dhis.webapi.controller.tracker.view.Event;
 import org.hisp.dhis.webapi.controller.tracker.view.TrackedEntity;
 
+@OpenApi.Shared(name = "RelationshipRequestParams")
 @OpenApi.Property
 @Data
 @NoArgsConstructor
@@ -48,9 +49,15 @@ public class RelationshipRequestParams implements PageRequestParams {
   static final String DEFAULT_FIELDS_PARAM =
       "relationship,relationshipType,createdAtClient,from[trackedEntity[trackedEntity],enrollment[enrollment],event[event]],to[trackedEntity[trackedEntity],enrollment[enrollment],event[event]]";
 
-  private Integer page = 1;
-  private Integer pageSize = 50;
+  @OpenApi.Property(defaultValue = "1")
+  private Integer page;
+
+  @OpenApi.Property(defaultValue = "50")
+  private Integer pageSize;
+
+  @OpenApi.Property(defaultValue = "false")
   private Boolean totalPages = false;
+
   private Boolean skipPaging = false;
 
   private List<OrderCriteria> order = new ArrayList<>();
diff --git a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/trackedentity/TrackedEntityRequestParams.java b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/trackedentity/TrackedEntityRequestParams.java
index 22e508da1fcc..3b31c872e576 100644
--- a/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/trackedentity/TrackedEntityRequestParams.java
+++ b/dhis-2/dhis-web-api/src/main/java/org/hisp/dhis/webapi/controller/tracker/export/trackedentity/TrackedEntityRequestParams.java
@@ -56,15 +56,22 @@
  *
  * @author Giuseppe Nespolino
  */
+@OpenApi.Shared(name = "TrackedEntityRequestParams")
 @OpenApi.Property
 @Data
 @NoArgsConstructor
 public class TrackedEntityRequestParams implements PageRequestParams {
   static final String DEFAULT_FIELDS_PARAM = "*,!relationships,!enrollments,!events,!programOwners";
 
-  private Integer page = 1;
-  private Integer pageSize = 50;
+  @OpenApi.Property(defaultValue = "1")
+  private Integer page;
+
+  @OpenApi.Property(defaultValue = "50")
+  private Integer pageSize;
+
+  @OpenApi.Property(defaultValue = "false")
   private Boolean totalPages = false;
+
   private Boolean skipPaging = false;
 
   private List<OrderCriteria> order = new ArrayList<>();