diff --git a/app/api/services/offer_analysis.py b/app/api/services/offer_analysis.py
index 9a2d56a..44b2472 100644
--- a/app/api/services/offer_analysis.py
+++ b/app/api/services/offer_analysis.py
@@ -40,9 +40,25 @@ class OfferAnalysis:
     def decide_offer(transaction_id, rac_check, validated_data,customer):
         # if we have active offers - we have to feed off it
 
+        """
+            Find the last loan - it will have original_transaction
 
+            This loan is part of the original approval where transaction_id =  original_transaction for this account
 
+            This will give you the eligible_amount = REAL_ELIGIBLIBLE_AMOUNT
 
+            Sum all loans amount with same original_transaction together = Sum_active loans. = SUM_OF_ACTIVE_LOAN
+
+            The new eligible amount will be  = REAL_ELIGIBLIBLE_AMOUNT  -  SUM_OF_ACTIVE_LOAN
+
+            Construct eligible_offers[]
+
+            Save eligible_offers
+
+            Return the eligible_amount
+
+            No need for fresh construct
+        """