diff --git a/server/tests/debug-tenant.js b/server/tests/debug-tenant.js
new file mode 100644
index 0000000..5a1c33b
--- /dev/null
+++ b/server/tests/debug-tenant.js
@@ -0,0 +1,40 @@
+// Debug script to isolate tenant validation issue
+const { setupTestEnvironment } = require('./setup');
+
+async function debugTenant() {
+  try {
+    console.log('Setting up test environment...');
+    const { models } = await setupTestEnvironment();
+    
+    console.log('Attempting to create tenant...');
+    const tenant = await models.Tenant.create({
+      name: 'Debug Tenant',
+      slug: 'debug-tenant-' + Date.now(),
+      domain: 'debug.example.com',
+      is_active: true
+    });
+    
+    console.log('✅ Tenant created successfully:', tenant.id);
+    
+  } catch (error) {
+    console.log('❌ Error creating tenant:');
+    console.log('Error name:', error.name);
+    console.log('Error message:', error.message);
+    console.log('Error details:', error);
+    
+    if (error.errors) {
+      console.log('Validation errors:');
+      error.errors.forEach(err => {
+        console.log(`  - ${err.path}: ${err.message}`);
+      });
+    }
+  }
+}
+
+debugTenant().then(() => {
+  console.log('Debug complete');
+  process.exit(0);
+}).catch(err => {
+  console.error('Debug script failed:', err);
+  process.exit(1);
+});