diff --git a/app/customers/backend/router.py b/app/customers/backend/router.py
index 1c2c8c9..f33ecb5 100644
--- a/app/customers/backend/router.py
+++ b/app/customers/backend/router.py
@@ -312,7 +312,18 @@ async def sync_economic_numbers_from_simplycrm():
         async with SimplyCRMService() as simplycrm:
             # Hent alle accounts fra Simply-CRM
             logger.info("📥 Fetching accounts from Simply-CRM...")
-            query = "SELECT accountname, cf_854 FROM Accounts LIMIT 5000;"
+            
+            # Først: Tjek hvilke felter der er tilgængelige
+            try:
+                test_query = "SELECT * FROM Accounts LIMIT 1;"
+                test_result = await simplycrm.query(test_query)
+                if test_result:
+                    logger.info(f"📋 Available fields: {list(test_result[0].keys())}")
+            except Exception as e:
+                logger.warning(f"⚠️ Could not fetch sample fields: {e}")
+            
+            # Query med standard felter + economic_acc_number
+            query = "SELECT id, accountname, economic_acc_number FROM Accounts LIMIT 5000;"
             accounts = await simplycrm.query(query)
             
             stats["simplycrm_accounts"] = len(accounts)
@@ -326,19 +337,24 @@ async def sync_economic_numbers_from_simplycrm():
                 }
             
             # Filter accounts med economic customer number
-            accounts_with_economic = [
-                acc for acc in accounts 
-                if acc.get('cf_854') and str(acc.get('cf_854')).strip() not in ['', '0', 'null', 'NULL']
-            ]
+            accounts_with_economic = []
+            for acc in accounts:
+                economic_number = acc.get('economic_acc_number')
+                
+                if economic_number and str(economic_number).strip() not in ['', '0', 'null', 'NULL']:
+                    accounts_with_economic.append({
+                        'accountname': acc.get('accountname'),
+                        'economic_number': str(economic_number).strip()
+                    })
             
             stats["accounts_with_economic_number"] = len(accounts_with_economic)
             logger.info(f"✅ {len(accounts_with_economic)} accounts have e-conomic customer numbers")
             
             # Map company name → economic_customer_number
             name_to_economic = {}
-            for acc in accounts_with_economic:
-                company_name = acc.get('accountname', '').strip()
-                economic_number = str(acc.get('cf_854', '')).strip()
+            for acc_data in accounts_with_economic:
+                company_name = acc_data['accountname'].strip()
+                economic_number = acc_data['economic_number']
                 
                 if company_name and economic_number:
                     # Normalize navn til lowercase for matching