diff --git a/addons/at_master_order/PAYMENT_VALIDATION_IMPLEMENTED.md b/addons/at_master_order/PAYMENT_VALIDATION_IMPLEMENTED.md
new file mode 100644
index 0000000..6a02e8e
--- /dev/null
+++ b/addons/at_master_order/PAYMENT_VALIDATION_IMPLEMENTED.md
@@ -0,0 +1,171 @@
+# Payment Customer Validation - Implementation Summary
+
+## ✅ Implementation Complete
+
+### Phase 1: Payment Customer Validation Wizard ✅
+
+**Files Created:**
+- `wizard/payment_customer_validation_wizard.py` - Wizard model
+- `wizard/payment_customer_validation_wizard_views.xml` - Wizard views
+
+**Features:**
+- ✅ Shows payment details (amount, partner, date)
+- ✅ Shows related bills (if found)
+- ✅ Suggests customers based on bills/partner history
+- ✅ Customer selection with search
+- ✅ Master Order selection (optional)
+- ✅ Two actions: "Confirm & Link" and "Skip for Now"
+- ✅ Creates transaction when customer is linked
+- ✅ Updates payment linkage status
+
+### Phase 2: Payment Tracking Dashboard ✅
+
+**Files Created:**
+- `views/payment_tracking_views.xml` - Tracking views
+
+**Features:**
+- ✅ List view with linkage status
+- ✅ Filters: Needs Review, Linked, Pending, Skipped, Failed
+- ✅ Group by: Status, Customer, Partner, Date
+- ✅ Color coding: Red (failed), Yellow (pending), Gray (skipped), Green (linked)
+- ✅ Quick actions: "Link Customer" button
+- ✅ Form view integration: Shows linkage fields
+- ✅ Menu item: "Payment Tracking" under Client Cash Flow
+
+### Phase 3: Enhanced Payment Model ✅
+
+**Fields Added to `account.payment`:**
+- ✅ `customer_linkage_status` - Status of customer linkage
+- ✅ `linked_customer_id` - Customer payment is linked to
+- ✅ `linked_transaction_id` - Transaction created from payment
+- ✅ `linkage_date` - When payment was linked
+- ✅ `linkage_user_id` - User who linked payment
+- ✅ `needs_review` - Flag for payments needing review
+
+**Methods Added:**
+- ✅ `action_open_validation_wizard()` - Open wizard for payment
+- ✅ `action_link_customer_manually()` - Manual linking action
+- ✅ `action_view_transaction()` - View linked transaction
+
+### Phase 4: Integration ✅
+
+**Payment Creation Flow:**
+1. Payment created → System tries to find customer automatically
+2. If customer found → Transaction created automatically ✅
+3. If customer NOT found → Payment marked as 'pending', needs review ⏳
+4. User can link manually from Payment Tracking page ✅
+
+**Payment Tracking Flow:**
+1. User opens "Payment Tracking" menu
+2. Sees list of all payments with linkage status
+3. Filters by "Needs Review" to see unlinked payments
+4. Clicks "Link Customer" button
+5. Wizard opens → User selects customer
+6. Transaction created → Payment marked as 'linked' ✅
+
+## User Workflows
+
+### Workflow 1: Automatic Linking (No Action Needed)
+```
+Payment Created → Customer Found Automatically → Transaction Created → Done ✅
+```
+
+### Workflow 2: Manual Linking (Wizard)
+```
+Payment Created → Customer NOT Found → Payment Marked 'Pending'
+    ↓
+User Opens Payment Tracking → Sees Unlinked Payment
+    ↓
+Clicks "Link Customer" → Wizard Opens
+    ↓
+User Selects Customer → Clicks "Confirm & Link"
+    ↓
+Transaction Created → Payment Marked 'Linked' ✅
+```
+
+### Workflow 3: Skip for Later
+```
+Payment Created → Customer NOT Found → Payment Marked 'Pending'
+    ↓
+User Opens Payment Tracking → Sees Unlinked Payment
+    ↓
+Clicks "Link Customer" → Wizard Opens
+    ↓
+User Clicks "Skip for Now"
+    ↓
+Payment Marked 'Skipped' → Appears in Unlinked List → Can Link Later ✅
+```
+
+## Menu Structure
+
+```
+Master Orders
+└── Client Cash Flow
+    ├── Cash Flow Overview
+    ├── All Transactions
+    ├── Supplier Debts
+    ├── Advanced Suppliers
+    ├── Payment Validation
+    └── Payment Tracking (NEW) ✅
+```
+
+## Key Features
+
+### 1. Validation Wizard
+- ✅ Non-intrusive: Only shows when customer cannot be found
+- ✅ Smart suggestions: Suggests customers based on bills/partner
+- ✅ Flexible: User can search for any customer
+- ✅ Clear messaging: Explains why validation is needed
+
+### 2. Payment Tracking Dashboard
+- ✅ Complete visibility: See all payments and their status
+- ✅ Easy filtering: Filter by linkage status
+- ✅ Quick actions: One-click linking
+- ✅ Color coding: Visual status indicators
+
+### 3. Data Integrity
+- ✅ All payments tracked: Status field shows linkage state
+- ✅ Audit trail: Tracks who linked and when
+- ✅ Transaction linking: Links payment to transaction
+- ✅ Automatic retry: Retries when payment is updated
+
+## Testing Checklist
+
+- [ ] Create payment with clear customer link → Should work automatically ✅
+- [ ] Create payment without customer link → Should appear in unlinked list ✅
+- [ ] Open Payment Tracking → Should show all payments ✅
+- [ ] Filter by "Needs Review" → Should show unlinked payments ✅
+- [ ] Click "Link Customer" → Wizard should open ✅
+- [ ] Select customer in wizard → Should create transaction ✅
+- [ ] Skip validation → Payment should be marked 'skipped' ✅
+- [ ] Link skipped payment later → Should work ✅
+
+## Files Modified
+
+1. ✅ `models/document_links.py` - Added fields and methods
+2. ✅ `wizard/__init__.py` - Added wizard import
+3. ✅ `__manifest__.py` - Added new files
+4. ✅ `views/menu.xml` - Added menu item
+
+## Next Steps
+
+1. **Deploy** to server
+2. **Test** payment creation flow
+3. **Test** manual linking from dashboard
+4. **Verify** transactions are created correctly
+5. **Check** wallet balances update correctly
+
+## Benefits
+
+✅ **Data Integrity** - All payments properly linked to customers  
+✅ **User Control** - Manual selection when automatic fails  
+✅ **Visibility** - Clear dashboard shows unlinked payments  
+✅ **Audit Trail** - Tracks who linked payments and when  
+✅ **Flexibility** - Skip for later review  
+✅ **Automation** - Still tries automatic detection first  
+
+---
+
+**Implementation Status: COMPLETE ✅**
+
+Ready for deployment and testing!