diff --git a/src/modules/ghost/functions.ts b/src/modules/ghost/functions.ts
index 9f5f68f..1bc67ba 100644
--- a/src/modules/ghost/functions.ts
+++ b/src/modules/ghost/functions.ts
@@ -37,6 +37,12 @@ export async function getOpponentHistory(carId: number)
                 take: 10
             });
 
+            // Error handling if regionId is below 1 or above 47
+            if(car!.regionId < 1 || car!.regionId > 47)
+            {
+                car!.regionId = Math.floor(Math.random() * 10) + 10;
+            }
+
             opponentHistory.push(wmproto.wm.protobuf.Car.create({
                 ...car!
             }))
@@ -74,7 +80,13 @@ export async function getStampTarget(carId: number)
                     gtWing: true,
                     lastPlayedPlace: true
                 }
-            })
+            });
+
+            // Error handling if regionId is below 1 or above 47
+            if(carTarget!.regionId < 1 || carTarget!.regionId > 47)
+            {
+                carTarget!.regionId = Math.floor(Math.random() * 10) + 10;
+            }
 
             stampTarget.push(
                 wmproto.wm.protobuf.StampTargetCar.create({
@@ -144,6 +156,12 @@ export async function getChallengers(carId: number)
                 result = Math.abs(getChallengers[i].result);
             }
 
+            // Error handling if regionId is below 1 or above 47
+            if(carTarget!.regionId < 1 || carTarget!.regionId > 47)
+            {
+                carTarget!.regionId = Math.floor(Math.random() * 10) + 10;
+            }
+
             challengers.push(
                 wmproto.wm.protobuf.ChallengerCar.create({
                     car: carTarget!,
@@ -214,6 +232,12 @@ export async function getGhostCar(car: any, area: number, ramp: number, path: nu
                 }
             });
 
+            // Error handling if regionId is below 1 or above 47
+            if(car!.regionId < 1 || car!.regionId > 47)
+            {
+                car!.regionId = Math.floor(Math.random() * 10) + 10;
+            }
+
             // Push user's car data without ghost trail
             if(!(ghost_trails))
             { 
diff --git a/src/modules/resource/crown_list.ts b/src/modules/resource/crown_list.ts
index ccbe38c..e782ed4 100644
--- a/src/modules/resource/crown_list.ts
+++ b/src/modules/resource/crown_list.ts
@@ -70,6 +70,12 @@ export async function getCrownList()
                     car_crown[counter].playedAt = 1674579600;
                 }
 
+                // Error handling if regionId is below 1 or above 47
+                if(car!.regionId < 1 || car!.regionId > 47)
+                {
+                    car!.regionId = Math.floor(Math.random() * 10) + 10;
+                }
+
                 // Push the car data to the crown holder data
                 // GID_RUNAREA_HIROSHIMA
                 if(car_crown[counter].area === 18)
diff --git a/src/modules/users.ts b/src/modules/users.ts
index 0a1333a..bb80143 100644
--- a/src/modules/users.ts
+++ b/src/modules/users.ts
@@ -60,7 +60,7 @@ export default class UserModule extends Module {
 				if (!body.cardChipId || !body.accessCode) 
 				{
 					let msg = {
-						error: wm.wm.protobuf.ErrorCode.ERR_ID_BANNED,
+						error: wm.wm.protobuf.ErrorCode.ERR_USER_SUCCEEDED,
 						numOfOwnedCars: 0,
 						spappState: wm.wm.protobuf.SmartphoneAppState.SPAPP_UNREGISTERED,
 						transferState: wm.wm.protobuf.TransferState.NOT_REGISTERED
@@ -81,6 +81,25 @@ export default class UserModule extends Module {
 				// New card registration is allowed
 				if (newCardsBanned === 0)
 				{
+					let checkUser = await prisma.user.findFirst({
+						where:{
+							chipId: body.cardChipId
+						}
+					});
+
+					if(checkUser)
+					{
+						msg.error = wm.wm.protobuf.ErrorCode.ERR_USER_LOCKED;
+
+						// Encode the response
+						let message = wm.wm.protobuf.LoadUserResponse.encode(msg);
+
+						// Send the response to the client
+						common.sendResponse(message, res);
+
+						return;
+					}
+
 					let user = await prisma.user.create({
 						data: {
 							chipId: body.cardChipId,