diff --git a/app/integrations/simbrella.py b/app/integrations/simbrella.py
index 29d12e0..1ef4fc3 100644
--- a/app/integrations/simbrella.py
+++ b/app/integrations/simbrella.py
@@ -251,7 +251,7 @@ class SimbrellaClient:
         logger.info(f"Here is your repayment data after setting repay date: {repayment_data}")
         debtId =  str(loan_data.get('debtId', "")).strip().zfill(6)
         collect_loan_data = {
-            "transactionId": repayment_data['transactionId'],
+            "transactionId": loan_data['transactionId'],
             "fbnTransactionId": loan_data['transactionId'],
             "debtId": debtId,
             "customerId": repayment_data['customerId'],
@@ -269,7 +269,6 @@ class SimbrellaClient:
         try:
             logger.info(f"Here is your CollectLoan Request data ***** : {collect_loan_data}")
             response = requests.post(api_url, json=collect_loan_data,timeout=30, headers=get_headers())
-            logger.info(f"headers: {get_headers()}")
             
             logger.info(f"CollectLoan response: {response.json()}")
             RepaymentService.set_repay_result(repayment_data['Id'], response.json().get('responseCode', ''), response.json().get('responseMessage', ''))
@@ -297,7 +296,15 @@ class SimbrellaClient:
             if result.get('responseCode') == '00':
                 amount_collected = Decimal(str(result.get('amountCollected', 0))).quantize(Decimal('0.01'), rounding=ROUND_HALF_UP)
                 logger.info(f'amount collected {amount_collected}')
-                updated_loan = LoanService.update_loan_balance(int(loan_data['debtId']), amount_collected)
+                try:
+                    updated_loan = LoanService.update_loan_balance(int(loan_data['debtId']), amount_collected)
+                except ValueError as ve:
+                    logger.error(f"Validation error updating loan balance: {ve}")
+                    return ResponseHelper.error(str(ve), status_code=400)
+                except Exception as ex:
+                    logger.error(f"Unexpected error updating loan balance: {ex}")
+                    return ResponseHelper.error("Unexpected error updating loan balance", status_code=500)
+
                 logger.info(f'updated loan {updated_loan}')
                 updated_balance = Decimal(str(updated_loan['balance'])).quantize(Decimal('0.01'))
                 logger.info(f'updated balance {updated_balance}')
diff --git a/app/models/loan.py b/app/models/loan.py
index d40fe65..2bf0359 100644
--- a/app/models/loan.py
+++ b/app/models/loan.py
@@ -242,7 +242,24 @@ class Loan(db.Model):
         logger.info(f"Found {len(customer_loans)} loans for customer ID: {customer_id} with total amount: {total_amount}")
 
         return customer_loans, total_amount
+    @classmethod
+    def get_customer_active_loans(cls,  customer_id):
+        """
+        Get customer's active loans and sum by customer_id.
+        """
+        customer_loans = cls.query.filter_by( customer_id = customer_id).all()
+        if not customer_loans:
+            raise ValueError(f"Customer with Id {customer_id} does not have any loan.")
 
+        total_amount = (
+            cls.query.with_entities(func.coalesce(func.sum(cls.balance), 0.0))
+            .filter_by(customer_id=customer_id)
+            .scalar()
+        )
+
+        logger.info(f"Found {len(customer_loans)} loans for customer ID: {customer_id} with total amount: {total_amount}")
+
+        return customer_loans, total_amount
 
     
     @classmethod