diff --git a/sigap-website/src/repositories/authentication.repository.ts b/sigap-website/src/application/repositories/authentication.repository.ts
similarity index 100%
rename from sigap-website/src/repositories/authentication.repository.ts
rename to sigap-website/src/application/repositories/authentication.repository.ts
diff --git a/sigap-website/src/repositories/users.repository.ts b/sigap-website/src/application/repositories/users.repository.ts
similarity index 98%
rename from sigap-website/src/repositories/users.repository.ts
rename to sigap-website/src/application/repositories/users.repository.ts
index 86408c9..0cc5508 100644
--- a/sigap-website/src/repositories/users.repository.ts
+++ b/sigap-website/src/application/repositories/users.repository.ts
@@ -2,7 +2,8 @@ import { createAdminClient } from "@/app/_utils/supabase/admin";
 import { createClient } from "@/app/_utils/supabase/client";
 import { CreateUserParams, InviteUserParams, UpdateUserParams, User, UserResponse } from "@/src/entities/models/users/users.model";
 import db from "@/prisma/db";
-import { DatabaseOperationError, NotFoundError, InputParseError, AuthenticationError, UnauthenticatedError, UnauthorizedError } from "@/path/to/custom/errors";
+import { DatabaseOperationError, NotFoundError } from "../entities/errors/common";
+import { AuthenticationError } from "../entities/errors/auth";
 
 export class UsersRepository {
     private supabaseAdmin = createAdminClient();
diff --git a/sigap-website/src/application/services/crash-reporter.service.interface.ts b/sigap-website/src/application/services/crash-reporter.service.interface.ts
new file mode 100644
index 0000000..b94f6b7
--- /dev/null
+++ b/sigap-website/src/application/services/crash-reporter.service.interface.ts
@@ -0,0 +1,3 @@
+export interface ICrashReporterService {
+    report(error: any): string;
+  }
\ No newline at end of file
diff --git a/sigap-website/src/application/services/instrumentation.service.interface.ts b/sigap-website/src/application/services/instrumentation.service.interface.ts
new file mode 100644
index 0000000..9c8ff0f
--- /dev/null
+++ b/sigap-website/src/application/services/instrumentation.service.interface.ts
@@ -0,0 +1,11 @@
+export interface IInstrumentationService {
+    startSpan<T>(
+      options: { name: string; op?: string; attributes?: Record<string, any> },
+      callback: () => T
+    ): T;
+    instrumentServerAction<T>(
+      name: string,
+      options: Record<string, any>,
+      callback: () => T
+    ): Promise<T>;
+  }
\ No newline at end of file
diff --git a/sigap-website/src/application/services/transaction-manager.service.interface.ts b/sigap-website/src/application/services/transaction-manager.service.interface.ts
new file mode 100644
index 0000000..419cd62
--- /dev/null
+++ b/sigap-website/src/application/services/transaction-manager.service.interface.ts
@@ -0,0 +1,8 @@
+import type { ITransaction } from '@/src/entities/models/transaction.interface';
+
+export interface ITransactionManagerService {
+  startTransaction<T>(
+    clb: (tx: ITransaction) => Promise<T>,
+    parent?: ITransaction
+  ): Promise<T>;
+}
\ No newline at end of file
diff --git a/sigap-website/src/entities/models/transaction.interface.ts b/sigap-website/src/entities/models/transaction.interface.ts
new file mode 100644
index 0000000..982a652
--- /dev/null
+++ b/sigap-website/src/entities/models/transaction.interface.ts
@@ -0,0 +1,3 @@
+export interface ITransaction {
+    rollback: () => void;
+  }
\ No newline at end of file