diff --git a/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentRequest.java b/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentRequest.java
index c87b2e87..e8166411 100644
--- a/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentRequest.java
+++ b/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentRequest.java
@@ -2,11 +2,8 @@ package org.example.petshopdesktop.api.dto.appointment;
 
 import java.time.LocalDate;
 import java.time.LocalTime;
-import java.util.List;
 
 public class AppointmentRequest {
-    private List<Long> petIds;
-    private List<Long> customerPetIds;
     private Long customerId;
     private Long storeId;
     private Long serviceId;
@@ -14,26 +11,11 @@ public class AppointmentRequest {
     private LocalDate appointmentDate;
     private LocalTime appointmentTime;
     private String appointmentStatus;
+    private Long petId;
 
     public AppointmentRequest() {
     }
 
-    public List<Long> getPetIds() {
-        return petIds;
-    }
-
-    public void setPetIds(List<Long> petIds) {
-        this.petIds = petIds;
-    }
-
-    public List<Long> getCustomerPetIds() {
-        return customerPetIds;
-    }
-
-    public void setCustomerPetIds(List<Long> customerPetIds) {
-        this.customerPetIds = customerPetIds;
-    }
-
     public Long getCustomerId() {
         return customerId;
     }
@@ -89,4 +71,12 @@ public class AppointmentRequest {
     public void setAppointmentStatus(String appointmentStatus) {
         this.appointmentStatus = appointmentStatus;
     }
+
+    public Long getPetId() {
+        return petId;
+    }
+
+    public void setPetId(Long petId) {
+        this.petId = petId;
+    }
 }
diff --git a/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentResponse.java b/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentResponse.java
index d1768a94..dd74554b 100644
--- a/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentResponse.java
+++ b/desktop/src/main/java/org/example/petshopdesktop/api/dto/appointment/AppointmentResponse.java
@@ -10,16 +10,14 @@ public class AppointmentResponse {
     private Long storeId;
     private String storeName;
     private Long serviceId;
-    private java.util.List<String> petNames;
-    private java.util.List<Long> petIds;
-    private java.util.List<String> customerPetNames;
-    private java.util.List<Long> customerPetIds;
     private String serviceName;
     private Long employeeId;
     private String employeeName;
     private LocalDate appointmentDate;
     private LocalTime appointmentTime;
     private String appointmentStatus;
+    private String petName;
+    private Long petId;
 
     public AppointmentResponse() {
     }
@@ -72,36 +70,20 @@ public class AppointmentResponse {
         this.serviceId = serviceId;
     }
 
-    public java.util.List<String> getPetNames() {
-        return petNames;
+    public String getPetName() {
+        return petName;
     }
 
-    public void setPetNames(java.util.List<String> petNames) {
-        this.petNames = petNames;
+    public void setPetName(String petName) {
+        this.petName = petName;
     }
 
-    public java.util.List<Long> getPetIds() {
-        return petIds;
+    public Long getPetId() {
+        return petId;
     }
 
-    public void setPetIds(java.util.List<Long> petIds) {
-        this.petIds = petIds;
-    }
-
-    public java.util.List<String> getCustomerPetNames() {
-        return customerPetNames;
-    }
-
-    public void setCustomerPetNames(java.util.List<String> customerPetNames) {
-        this.customerPetNames = customerPetNames;
-    }
-
-    public java.util.List<Long> getCustomerPetIds() {
-        return customerPetIds;
-    }
-
-    public void setCustomerPetIds(java.util.List<Long> customerPetIds) {
-        this.customerPetIds = customerPetIds;
+    public void setPetId(Long petId) {
+        this.petId = petId;
     }
 
     public String getServiceName() {
diff --git a/desktop/src/main/java/org/example/petshopdesktop/controllers/AppointmentController.java b/desktop/src/main/java/org/example/petshopdesktop/controllers/AppointmentController.java
index d183918a..039e4b4f 100644
--- a/desktop/src/main/java/org/example/petshopdesktop/controllers/AppointmentController.java
+++ b/desktop/src/main/java/org/example/petshopdesktop/controllers/AppointmentController.java
@@ -231,18 +231,12 @@ public class AppointmentController {
     }
 
     private AppointmentDTO mapToAppointmentDTO(AppointmentResponse response) {
-        Long petId = response.getCustomerPetIds() != null && !response.getCustomerPetIds().isEmpty()
-                ? response.getCustomerPetIds().get(0)
-                : response.getPetIds() != null && !response.getPetIds().isEmpty() ? response.getPetIds().get(0) : null;
-        String petName = response.getCustomerPetNames() != null && !response.getCustomerPetNames().isEmpty()
-                ? String.join(", ", response.getCustomerPetNames())
-                : String.join(", ", response.getPetNames());
         return new AppointmentDTO(
             response.getAppointmentId().intValue(),
             response.getCustomerId() != null ? response.getCustomerId().intValue() : 0,
             response.getCustomerName(),
-            petId != null ? petId.intValue() : 0,
-            petName,
+            response.getPetId() != null ? response.getPetId().intValue() : 0,
+            response.getPetName(),
             response.getServiceId() != null ? response.getServiceId().intValue() : 0,
             response.getServiceName(),
             response.getEmployeeId() != null ? response.getEmployeeId().intValue() : 0,
diff --git a/desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AppointmentDialogController.java b/desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AppointmentDialogController.java
index d21ad756..139255c6 100644
--- a/desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AppointmentDialogController.java
+++ b/desktop/src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/AppointmentDialogController.java
@@ -21,7 +21,6 @@ import org.example.petshopdesktop.util.ActivityLogger;
 import java.time.LocalTime;
 import java.time.LocalDate;
 import java.util.List;
-import java.util.Collections;
 import java.util.Objects;
 
 public class AppointmentDialogController {
@@ -215,7 +214,7 @@ public class AppointmentDialogController {
         }
 
         AppointmentRequest request = new AppointmentRequest();
-        request.setCustomerPetIds(Collections.singletonList(cbPet.getValue().getId()));
+        request.setPetId(cbPet.getValue().getId());
         request.setCustomerId(cbCustomer.getValue().getId());
         request.setStoreId(storeId);
         request.setServiceId(cbService.getValue().getId());