diff --git a/DEPRECATED_FUNCTIONS.md b/DEPRECATED_FUNCTIONS.md
index 588b01cb..ef244117 100644
--- a/DEPRECATED_FUNCTIONS.md
+++ b/DEPRECATED_FUNCTIONS.md
@@ -95,6 +95,12 @@ Use these functions for all email formatting needs.
 - **Status**: Removed
 - **Replacement**: Use `app/api/courrier/send/route.ts` instead.
 
+### 4. `DELETE /api/users/[userId]` (DEPRECATED)
+- **Status**: Deprecated but maintained for backward compatibility
+- **Replacement**: Use `DELETE /api/users?id=[userId]&email=[userEmail]` instead
+- **Reason**: The new endpoint format supports deletion across all integrated systems (Keycloak, Leantime, and Dolibarr)
+- **Notes**: The deprecated endpoint now forwards requests to the new endpoint but developers should update their code to use the new format directly
+
 ## Deprecated Components
 
 ### ComposeEmail (components/ComposeEmail.tsx) (REMOVED)
diff --git a/README.md b/README.md
index 8a549111..550c914d 100644
--- a/README.md
+++ b/README.md
@@ -79,4 +79,30 @@ This centralized approach prevents formatting inconsistencies and direction prob
 
 Several functions have been deprecated and removed in favor of centralized implementations:
 
-- Check the `DEPRECATED_FUNCTIONS.md` file for a complete list of deprecated functions and their replacements. 
\ No newline at end of file
+- Check the `DEPRECATED_FUNCTIONS.md` file for a complete list of deprecated functions and their replacements.
+
+## User Management API
+
+The application provides endpoints for managing users in multiple systems:
+
+- **Create User**: 
+  - Endpoint: `POST /api/users`
+  - Creates users in Keycloak, Leantime, and Dolibarr (if they have "mediation" or "expression" roles)
+  
+- **Update User**: 
+  - Endpoint: `PUT /api/users/[userId]`
+  - Updates user details in Keycloak
+  
+- **Delete User**: 
+  - Endpoint: `DELETE /api/users?id=[userId]&email=[userEmail]`
+  - Deletes users from Keycloak, Leantime, and Dolibarr systems
+  - **Important**: Always include both `id` and `email` parameters for complete deletion across all systems
+  - The legacy endpoint `DELETE /api/users/[userId]` forwards to the above endpoint
+
+- **Manage Roles**: 
+  - Endpoint: `PUT /api/users/[userId]/roles`
+  - Updates user roles in Keycloak
+
+- **Reset Password**: 
+  - Endpoint: `PUT /api/users/[userId]/password`
+  - Resets user password in Keycloak 
\ No newline at end of file
diff --git a/app/api/users/[userId]/route.ts b/app/api/users/[userId]/route.ts
index febfabc2..38fc6da2 100644
--- a/app/api/users/[userId]/route.ts
+++ b/app/api/users/[userId]/route.ts
@@ -173,39 +173,35 @@ export async function DELETE(
 
     const userDetails = await userResponse.json();
     console.log('Processing user deletion for ID:', params.userId);
-
-    // Delete user from Keycloak
-    const deleteResponse = await fetch(
-      `${process.env.KEYCLOAK_BASE_URL}/admin/realms/${process.env.KEYCLOAK_REALM}/users/${params.userId}`,
-      {
-        method: "DELETE",
-        headers: {
-          Authorization: `Bearer ${tokenData.access_token}`,
-        },
-      }
-    );
-
-    if (!deleteResponse.ok) {
-      console.error("Keycloak delete error");
+    
+    // Forward the request to the new endpoint format with the email parameter
+    // This ensures Dolibarr deletion is also handled
+    const apiUrl = new URL(`${req.headers.get('origin') || process.env.NEXTAUTH_URL}/api/users`);
+    apiUrl.searchParams.append('id', params.userId);
+    apiUrl.searchParams.append('email', userDetails.email);
+    
+    const forwardResponse = await fetch(apiUrl.toString(), {
+      method: "DELETE",
+      headers: {
+        "Cookie": req.headers.get('cookie') || '',
+        "Authorization": req.headers.get('authorization') || '',
+      },
+    });
+    
+    if (!forwardResponse.ok) {
+      const errorData = await forwardResponse.json();
+      console.error("Error forwarding delete request:", errorData);
       return NextResponse.json(
-        { error: "Erreur lors de la suppression de l'utilisateur" },
-        { status: deleteResponse.status }
+        { error: "Erreur lors de la suppression de l'utilisateur", details: errorData },
+        { status: forwardResponse.status }
       );
     }
-
-    // Delete user from Leantime
-    const leantimeResult = await deleteLeantimeUser(userDetails.email, session.user.id);
-
-    if (!leantimeResult.success) {
-      console.error("Leantime user deletion failed");
-      // We don't return an error here since Keycloak user was deleted successfully
-      // We just log the error and continue
-    }
-
-    return NextResponse.json({ success: true });
+    
+    const responseData = await forwardResponse.json();
+    return NextResponse.json(responseData);
 
   } catch (error) {
-    console.error("Error deleting user");
+    console.error("Error deleting user:", error);
     return NextResponse.json(
       { error: "Erreur serveur" },
       { status: 500 }
diff --git a/scripts/test-user-deletion.js b/scripts/test-user-deletion.js
new file mode 100644
index 00000000..5b805045
--- /dev/null
+++ b/scripts/test-user-deletion.js
@@ -0,0 +1,273 @@
+/**
+ * Test script for verifying user deletion across all integrated systems
+ * 
+ * This script creates a test user with mediation role, verifies it exists in all systems,
+ * then deletes it and verifies deletion in all systems.
+ * 
+ * Usage: node scripts/test-user-deletion.js
+ */
+
+require('dotenv').config();
+const fetch = require('node-fetch');
+
+// Test user configuration
+const TEST_USER = {
+  username: `test-user-${Date.now()}`,
+  firstName: 'Test',
+  lastName: 'User',
+  email: `test-user-${Date.now()}@example.com`,
+  password: 'password123',
+  roles: ['mediation'] // Using mediation role which should be created in Dolibarr
+};
+
+// Configuration from environment variables
+const config = {
+  keycloak: {
+    baseUrl: process.env.KEYCLOAK_BASE_URL,
+    realm: process.env.KEYCLOAK_REALM,
+    clientId: process.env.KEYCLOAK_CLIENT_ID,
+    clientSecret: process.env.KEYCLOAK_CLIENT_SECRET
+  },
+  leantime: {
+    apiUrl: 'https://agilite.slm-lab.net/api/jsonrpc',
+    apiKey: process.env.LEANTIME_TOKEN
+  },
+  dolibarr: {
+    apiUrl: process.env.DOLIBARR_API_URL,
+    apiKey: process.env.DOLIBARR_API_KEY
+  },
+  nextAuthUrl: process.env.NEXTAUTH_URL || 'http://localhost:3000'
+};
+
+// Helper to get admin token for Keycloak operations
+async function getKeycloakAdminToken() {
+  const response = await fetch(
+    `${config.keycloak.baseUrl}/realms/${config.keycloak.realm}/protocol/openid-connect/token`,
+    {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+      body: new URLSearchParams({
+        grant_type: 'client_credentials',
+        client_id: config.keycloak.clientId,
+        client_secret: config.keycloak.clientSecret,
+      }),
+    }
+  );
+
+  const data = await response.json();
+  if (!response.ok || !data.access_token) {
+    throw new Error('Failed to get Keycloak admin token');
+  }
+  
+  return data.access_token;
+}
+
+// Create a test user in all systems via the API
+async function createTestUser() {
+  console.log(`Creating test user: ${TEST_USER.username} (${TEST_USER.email})`);
+  
+  const response = await fetch(`${config.nextAuthUrl}/api/users`, {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    body: JSON.stringify(TEST_USER),
+  });
+  
+  if (!response.ok) {
+    const error = await response.json();
+    throw new Error(`Failed to create test user: ${JSON.stringify(error)}`);
+  }
+  
+  const data = await response.json();
+  console.log('User created successfully:', data);
+  return data.user;
+}
+
+// Check if user exists in Keycloak
+async function checkKeycloakUser(userId) {
+  console.log(`Checking if user exists in Keycloak (ID: ${userId})`);
+  const token = await getKeycloakAdminToken();
+  
+  const response = await fetch(
+    `${config.keycloak.baseUrl}/admin/realms/${config.keycloak.realm}/users/${userId}`,
+    {
+      headers: {
+        Authorization: `Bearer ${token}`,
+      },
+    }
+  );
+  
+  if (response.status === 404) {
+    console.log('User not found in Keycloak');
+    return false;
+  }
+  
+  if (!response.ok) {
+    console.error('Error checking Keycloak user:', await response.text());
+    return null; // Error state
+  }
+  
+  console.log('User exists in Keycloak');
+  return true;
+}
+
+// Check if user exists in Leantime
+async function checkLeantimeUser(email) {
+  console.log(`Checking if user exists in Leantime (Email: ${email})`);
+  
+  try {
+    const response = await fetch(config.leantime.apiUrl, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        'X-API-Key': config.leantime.apiKey,
+      },
+      body: JSON.stringify({
+        method: 'leantime.rpc.Users.Users.getUserIdByEmail',
+        jsonrpc: '2.0',
+        id: 1,
+        params: {
+          email: email
+        }
+      })
+    });
+    
+    const data = await response.json();
+    if (!response.ok || !data.result) {
+      console.log('User not found in Leantime');
+      return false;
+    }
+    
+    console.log('User exists in Leantime');
+    return true;
+  } catch (error) {
+    console.error('Error checking Leantime user:', error);
+    return null; // Error state
+  }
+}
+
+// Check if user exists in Dolibarr
+async function checkDolibarrUser(email) {
+  console.log(`Checking if user exists in Dolibarr (Email: ${email})`);
+  
+  try {
+    const apiUrl = config.dolibarr.apiUrl.endsWith('/') 
+      ? config.dolibarr.apiUrl 
+      : `${config.dolibarr.apiUrl}/`;
+      
+    const response = await fetch(
+      `${apiUrl}users?sortfield=t.rowid&sortorder=ASC&limit=1&sqlfilters=(t.email:=:'${encodeURIComponent(email)}')`, 
+      {
+        method: 'GET',
+        headers: {
+          'DOLAPIKEY': config.dolibarr.apiKey,
+        },
+      }
+    );
+    
+    if (!response.ok) {
+      console.error('Error response from Dolibarr:', await response.text());
+      return null; // Error state
+    }
+    
+    const data = await response.json();
+    if (!Array.isArray(data) || data.length === 0) {
+      console.log('User not found in Dolibarr');
+      return false;
+    }
+    
+    console.log('User exists in Dolibarr with ID:', data[0].id);
+    return { exists: true, id: data[0].id };
+  } catch (error) {
+    console.error('Error checking Dolibarr user:', error);
+    return null; // Error state
+  }
+}
+
+// Delete user from all systems via the API
+async function deleteTestUser(userId, email) {
+  console.log(`Deleting test user: ID=${userId}, Email=${email}`);
+  
+  const response = await fetch(
+    `${config.nextAuthUrl}/api/users?id=${userId}&email=${encodeURIComponent(email)}`,
+    {
+      method: 'DELETE',
+    }
+  );
+  
+  if (!response.ok) {
+    const error = await response.json();
+    throw new Error(`Failed to delete test user: ${JSON.stringify(error)}`);
+  }
+  
+  console.log('User deletion request successful');
+  return await response.json();
+}
+
+// Main test function
+async function runTest() {
+  try {
+    console.log('=== STARTING USER DELETION TEST ===');
+    
+    // Step 1: Create a test user
+    console.log('\n=== Step 1: Creating test user ===');
+    const createdUser = await createTestUser();
+    console.log(`Test user created with ID: ${createdUser.id}`);
+    
+    // Wait a moment for systems to process
+    console.log('Waiting for systems to process...');
+    await new Promise(resolve => setTimeout(resolve, 2000));
+    
+    // Step 2: Verify user exists in all systems
+    console.log('\n=== Step 2: Verifying user exists in all systems ===');
+    const keycloakExists = await checkKeycloakUser(createdUser.id);
+    const leantimeExists = await checkLeantimeUser(TEST_USER.email);
+    const dolibarrUser = await checkDolibarrUser(TEST_USER.email);
+    
+    if (keycloakExists === null || leantimeExists === null || dolibarrUser === null) {
+      throw new Error('Error checking user existence in integrated systems');
+    }
+    
+    if (!keycloakExists || !leantimeExists || !dolibarrUser.exists) {
+      throw new Error('User not created in all systems properly');
+    }
+    
+    console.log('User confirmed to exist in all integrated systems');
+    
+    // Step 3: Delete the test user
+    console.log('\n=== Step 3: Deleting test user ===');
+    await deleteTestUser(createdUser.id, TEST_USER.email);
+    
+    // Wait a moment for systems to process
+    console.log('Waiting for systems to process deletion...');
+    await new Promise(resolve => setTimeout(resolve, 2000));
+    
+    // Step 4: Verify user has been deleted from all systems
+    console.log('\n=== Step 4: Verifying user deletion from all systems ===');
+    const keycloakDeleted = !(await checkKeycloakUser(createdUser.id));
+    const leantimeDeleted = !(await checkLeantimeUser(TEST_USER.email));
+    const dolibarrDeleted = !(await checkDolibarrUser(TEST_USER.email)).exists;
+    
+    console.log('\n=== TEST RESULTS ===');
+    console.log(`Keycloak user deleted: ${keycloakDeleted ? 'YES' : 'NO'}`);
+    console.log(`Leantime user deleted: ${leantimeDeleted ? 'YES' : 'NO'}`);
+    console.log(`Dolibarr user deleted: ${dolibarrDeleted ? 'YES' : 'NO'}`);
+    
+    if (keycloakDeleted && leantimeDeleted && dolibarrDeleted) {
+      console.log('\n✅ TEST PASSED: User successfully deleted from all systems');
+    } else {
+      console.log('\n❌ TEST FAILED: User not deleted from all systems');
+    }
+    
+  } catch (error) {
+    console.error('\n❌ TEST ERROR:', error);
+  }
+  
+  console.log('\n=== TEST COMPLETED ===');
+}
+
+// Run the test
+runTest(); 
\ No newline at end of file