Add Due Amount FlowFields to Customer and Vendor Cards

[Copilot]

Adds FlowFields to Customer and Vendor tables that calculate total due amounts filtered by date, displayed on respective Card pages.

Changes

Table Extensions (IDs 80550-80551)

• CustomerExtension.TableExt.al - FlowField summing Detailed Cust. Ledg. Entry.Amount filtered by Customer No. and Initial Entry Due Date
• VendorExtension.TableExt.al - FlowField summing Detailed Vendor Ledg. Entry.Amount filtered by Vendor No. and Initial Entry Due Date

Page Extensions (IDs 80550-80551)

• CustomerCardExtension.PageExt.al - Adds Due Amount field after Balance (LCY)
• VendorCardExtension.PageExt.al - Adds Due Amount field after Balance (LCY)

Implementation

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;
}

Date filtering enabled via field("Date Filter") reference - users can apply date ranges on the Card pages to dynamically recalculate due amounts. FlowFields calculate on-demand using indexed filters.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Enhance Customer and vendor due amount</issue_title>
<issue_description>We need to enhance the Customer and Vendor Card page in Business Central by adding a new FlowField that shows the Due Amount of the customer.
Requirements:

1. Add a FlowField in the Customer/Vendor table extension that calculates the total due amount for the customer.
   ○ The field should reference the Detailed Cust. Ledg. Entry and Dtld. Vendor Ledger Entry
   ○ It must calculate the sum of Amount where Due Date is within the applied filter.
2. Enable a Date Filter on this FlowField so users can select a date range to dynamically view the due amounts.
3. Display the new field on the Customer/Vendor Card page so end users can easily access the information.
4. Filter Fields are not displayed on pages
   Acceptance Criteria:
   • A new field "Due Amount" is available on the Customer/Vendor Card.
   • The field correctly reflects the customer’s/Vendor's total outstanding due amounts.
   • Users can apply a date filter, and the field recalculates accordingly.
   • No performance degradation occurs when opening the Customer/Vendor Card.
   Notes:
   • Follow AL coding best practices. https://alguidelines.dev/ https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/
   • Ensure compatibility with existing customer extensions.</issue_description>

<agent_instructions>Follow AL coding best practices.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Enhance Customer and vendor due amount #10

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