Add Due Amount FlowFields to Customer and Vendor Cards

Customization/src/CustomerCardExtension.PageExt.al

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+pageextension 80550 "Customer Card Extension" extends "Customer Card"
+{
+    layout
+    {
+        addafter("Balance (LCY)")
+        {
+            field("Due Amount"; Rec."Due Amount")
+            {
+                ApplicationArea = All;
+                Caption = 'Due Amount';
+                ToolTip = 'Specifies the total due amount for the customer based on the applied date filter.';
+            }
+        }
+    }
+}

Customization/src/CustomerExtension.TableExt.al

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+tableextension 80550 "Customer Extension" extends Customer
+{
+    fields
+    {
+        field(80550; "Due Amount"; Decimal)
+        {
+            FieldClass = FlowField;
+            CalcFormula = Sum("Detailed Cust. Ledg. Entry".Amount where("Customer No." = field("No."),
+                                                                          "Initial Entry Due Date" = field("Date Filter")));
+            Caption = 'Due Amount';
+            Editable = false;
+            ToolTip = 'Specifies the total due amount for the customer based on the applied date filter.';
+        }
+    }
+}

Customization/src/VendorCardExtension.PageExt.al

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+pageextension 80551 "Vendor Card Extension" extends "Vendor Card"
+{
+    layout
+    {
+        addafter("Balance (LCY)")
+        {
+            field("Due Amount"; Rec."Due Amount")
+            {
+                ApplicationArea = All;
+                Caption = 'Due Amount';
+                ToolTip = 'Specifies the total due amount for the vendor based on the applied date filter.';
+            }
+        }
+    }
+}

Customization/src/VendorExtension.TableExt.al

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+tableextension 80551 "Vendor Extension" extends Vendor
+{
+    fields
+    {
+        field(80551; "Due Amount"; Decimal)
+        {
+            FieldClass = FlowField;
+            CalcFormula = Sum("Detailed Vendor Ledg. Entry".Amount where("Vendor No." = field("No."),
+                                                                           "Initial Entry Due Date" = field("Date Filter")));
+            Caption = 'Due Amount';
+            Editable = false;
+            ToolTip = 'Specifies the total due amount for the vendor based on the applied date filter.';
+        }
+    }
+}