diff --git a/src/main/java/com/billpaymentservice/bbps/dto/UserDetailsDTO.java b/src/main/java/com/billpaymentservice/bbps/dto/UserDetailsDTO.java
index c70f8e8..ea62152 100644
--- a/src/main/java/com/billpaymentservice/bbps/dto/UserDetailsDTO.java
+++ b/src/main/java/com/billpaymentservice/bbps/dto/UserDetailsDTO.java
@@ -11,7 +11,7 @@ import lombok.NoArgsConstructor;
 @Builder
 public class UserDetailsDTO {
 
-	private Long id;
+	private String userId;
 
 	private String userEmailId;
 
diff --git a/src/main/java/com/billpaymentservice/bbps/entites/UserEntity.java b/src/main/java/com/billpaymentservice/bbps/entites/UserEntity.java
index 374693f..6f15c4e 100644
--- a/src/main/java/com/billpaymentservice/bbps/entites/UserEntity.java
+++ b/src/main/java/com/billpaymentservice/bbps/entites/UserEntity.java
@@ -25,6 +25,9 @@ public class UserEntity extends Auditable<String> {
 	@GeneratedValue(strategy = GenerationType.IDENTITY)
 	private Long id;
 
+	@Column(name = "user_id", unique = true)
+	private String userId;
+
 	@Column(name = "mobile", nullable = false, unique = true, length = 20)
 	private String mobile;
 
diff --git a/src/main/java/com/billpaymentservice/bbps/repository/UserRepository.java b/src/main/java/com/billpaymentservice/bbps/repository/UserRepository.java
index 54c7362..3fa5354 100644
--- a/src/main/java/com/billpaymentservice/bbps/repository/UserRepository.java
+++ b/src/main/java/com/billpaymentservice/bbps/repository/UserRepository.java
@@ -9,5 +9,8 @@ import com.billpaymentservice.bbps.entites.UserEntity;
 
 @Repository
 public interface UserRepository extends JpaRepository<UserEntity, Long> {
-    Optional<UserEntity> findByMobile(String mobile);
+	Optional<UserEntity> findByMobile(String mobile);
+
+	// check user id exists
+	boolean existsByUserId(String userId);
 }
diff --git a/src/main/java/com/billpaymentservice/bbps/serviceImpl/AuthServiceImpl.java b/src/main/java/com/billpaymentservice/bbps/serviceImpl/AuthServiceImpl.java
index 817eed1..d6eb102 100644
--- a/src/main/java/com/billpaymentservice/bbps/serviceImpl/AuthServiceImpl.java
+++ b/src/main/java/com/billpaymentservice/bbps/serviceImpl/AuthServiceImpl.java
@@ -93,8 +93,7 @@ public class AuthServiceImpl implements AuthService {
 				Object userDetailsDTO = null;
 
 				if (user != null) {
-					userDetailsDTO = UserDetailsDTO.builder().id(user.getId()).userEmailId(user.getEmail())
-							.userMobNo(user.getMobile()).userName(user.getName()).build();
+					userDetailsDTO = helper.mapUserToUserDetailsDTO(user);
 				}
 
 				AuthResponses authResp = new AuthResponses(token, "Success", "Login Success", 200, userDetailsDTO,
@@ -148,6 +147,7 @@ public class AuthServiceImpl implements AuthService {
 				return ResponseModel.builder().message(ar.getMessage()).status("Failure").statusCode(409).data(ar)
 						.build();
 			}
+
 			UserEntity userEntity = helper.createNewUser(request);
 			userRepository.save(userEntity);
 			String token = jwtUtil.generateToken(userEntity.getMobile());
diff --git a/src/main/java/com/billpaymentservice/bbps/util/Helper.java b/src/main/java/com/billpaymentservice/bbps/util/Helper.java
index a910789..ff51436 100644
--- a/src/main/java/com/billpaymentservice/bbps/util/Helper.java
+++ b/src/main/java/com/billpaymentservice/bbps/util/Helper.java
@@ -3,7 +3,7 @@ package com.billpaymentservice.bbps.util;
 import java.security.SecureRandom;
 import java.time.LocalDateTime;
 import java.util.Date;
-import java.util.Random;
+import java.util.UUID;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -11,6 +11,7 @@ import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Component;
 
+import com.billpaymentservice.bbps.dto.UserDetailsDTO;
 import com.billpaymentservice.bbps.dto.auth.RegisterRequest;
 import com.billpaymentservice.bbps.entites.BBPSMastersData;
 import com.billpaymentservice.bbps.entites.BharatConnectMaster;
@@ -24,6 +25,7 @@ import com.billpaymentservice.bbps.repository.BillValidationRepository;
 import com.billpaymentservice.bbps.repository.BillerDataRepository;
 import com.billpaymentservice.bbps.repository.InboundTraceLogRepository;
 import com.billpaymentservice.bbps.repository.OutboundTraceLogRepository;
+import com.billpaymentservice.bbps.repository.UserRepository;
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 @Component
@@ -32,6 +34,7 @@ public class Helper {
 	private static final Logger LOGGER = LoggerFactory.getLogger(Helper.class);
 	private final InboundTraceLogRepository inboundTraceLogRepository;
 	private final OutboundTraceLogRepository outboundTraceLogRepository;
+	private final UserRepository userRepository;
 
 	private static final String CHARACTERS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
 	private static final SecureRandom secureRandom = new SecureRandom();
@@ -40,12 +43,13 @@ public class Helper {
 
 	// Constructor Injection
 	public Helper(BBPSMasterDataRepo bbpsMasterDataRepo, InboundTraceLogRepository inboundTraceLogRepository,
-
 			OutboundTraceLogRepository outboundTraceLogRepository, BillerDataRepository billerDataRepository,
-			BillMasterRepository billMasterRepository, BillValidationRepository billValidationRepository) {
+			BillMasterRepository billMasterRepository, BillValidationRepository billValidationRepository,
+			UserRepository userRepository) {
 		this.inboundTraceLogRepository = inboundTraceLogRepository;
 		this.outboundTraceLogRepository = outboundTraceLogRepository;
 		this.bbpsMasterDataRepo = bbpsMasterDataRepo;
+		this.userRepository = userRepository;
 	}
 
 	/**
@@ -174,23 +178,47 @@ public class Helper {
 	public UserEntity createNewUser(RegisterRequest request) {
 		UserEntity user = new UserEntity();
 
-	//	user.setId(generateUserId());
+		// user.setId(generateUserId());
 		user.setMobile(request.getMobile());
 		user.setName(request.getName());
 		user.setEmail(request.getEmail());
 		user.setMid(request.getMid());
 		user.setCreateDateTime(new Date());
+		// Generate a unique userId (UUID)
+		String uniqueUserId = generateUniqueUserId();
+		user.setUserId(uniqueUserId);
 
 		return user;
 	}
-	
-	public <T> T convertJsonToObject(String json, Class<T> clazz) {
-	    try {
-	        return objectMapper.readValue(json, clazz);
-	    } catch (Exception e) {
-	        throw new CustomException("Invalid JSON from payment API", "FAILED", 400, json);
-	    }
+
+	public Object mapUserToUserDetailsDTO(UserEntity user) {
+		if (user != null) {
+			return UserDetailsDTO.builder().userId(user.getUserId() != null ? user.getUserId() : null) // Set null if
+					.userEmailId(user.getEmail() != null ? user.getEmail() : null)
+					.userMobNo(user.getMobile() != null ? user.getMobile() : null)
+					.userName(user.getName() != null ? user.getName() : null).build();
+		}
+		return null; // or handle accordingly if user is null
 	}
 
+	public <T> T convertJsonToObject(String json, Class<T> clazz) {
+		try {
+			return objectMapper.readValue(json, clazz);
+		} catch (Exception e) {
+			throw new CustomException("Invalid JSON from payment API", "FAILED", 400, json);
+		}
+	}
 
+	private String generateUniqueUserId() {
+		String userId = UUID.randomUUID().toString(); // Generate UUID
+
+		// Check if the userId already exists in the database (theoretically rare but
+		// can happen)
+		while (userRepository.existsByUserId(userId)) {
+			// If it exists, generate a new one
+			userId = UUID.randomUUID().toString();
+		}
+
+		return userId;
+	}
 }
\ No newline at end of file