Szablon danych dotyczących należności

/* SQL Transformation Script for D365 BYOD Tables */
/* Target: Azure SQL Database containing exported entities */

WITH InvoiceBasics AS (
    SELECT 
        InvoiceNumber AS InvoiceId,
        InvoiceDate,
        DueDate,
        InvoiceAccount AS CustomerAccount,
        SalesId,
        DataAreaId AS CompanyCode,
        InvoiceAmount,
        Currency
    FROM dbo.CustInvoiceJournalHeaderEntity
    WHERE InvoiceDate >= DATEADD(month, -12, GETDATE())
)

/* 1. Invoice Posted */
SELECT 
    T1.InvoiceId AS InvoiceNumber,
    'Invoice Posted' AS Activity,
    CAST(T1.InvoiceDate AS DATETIME) AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    T1.CustomerAccount,
    NULL AS CustomerGroup,
    T1.InvoiceAmount,
    T1.DueDate,
    NULL AS [User],
    NULL AS BusinessUnit,
    T1.CompanyCode,
    1 AS IsAutomated
FROM InvoiceBasics T1

UNION ALL

/* 2. Invoice Dispatched (Inferred from Document Date as Proxy if Print Log unavailable) */
SELECT 
    T1.InvoiceId,
    'Invoice Dispatched' AS Activity,
    DATEADD(minute, 5, CAST(T1.InvoiceDate AS DATETIME)) AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    T1.CustomerAccount,
    NULL,
    T1.InvoiceAmount,
    T1.DueDate,
    NULL,
    NULL,
    T1.CompanyCode,
    1
FROM InvoiceBasics T1

UNION ALL

/* 3. Due Date Passed (Synthetic Event) */
SELECT 
    T1.InvoiceId,
    'Due Date Passed' AS Activity,
    CAST(T1.DueDate AS DATETIME) AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    T1.CustomerAccount,
    NULL,
    T1.InvoiceAmount,
    T1.DueDate,
    NULL,
    NULL,
    T1.CompanyCode,
    1
FROM InvoiceBasics T1
WHERE GETDATE() > T1.DueDate

UNION ALL

/* 4. Payment Reminder Sent */
SELECT 
    Inv.InvoiceId,
    'Payment Reminder Sent' AS Activity,
    CL.JournalDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    CL.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CustCollectionLetterJournalHeaderEntity CL
JOIN dbo.CustCollectionLetterLineEntity CLL ON CL.JournalNumber = CLL.JournalNumber AND CL.DataAreaId = CLL.DataAreaId
JOIN InvoiceBasics Inv ON CLL.InvoiceId = Inv.InvoiceId AND CLL.DataAreaId = Inv.CompanyCode

UNION ALL

/* 5. Promise to Pay Received */
SELECT 
    Inv.InvoiceId,
    'Promise to Pay Received' AS Activity,
    PTP.PromiseDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    NULL,
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CustPromiseToPayEntity PTP
JOIN InvoiceBasics Inv ON PTP.Invoice = Inv.InvoiceId AND PTP.DataAreaId = Inv.CompanyCode

UNION ALL

/* 6. Dispute Case Opened */
SELECT 
    Inv.InvoiceId,
    'Dispute Case Opened' AS Activity,
    CD.CreatedDateTime AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    CD.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CaseDetailEntity CD
JOIN dbo.CaseAssociationEntity CA ON CD.CaseId = CA.CaseId AND CD.DataAreaId = CA.DataAreaId
JOIN InvoiceBasics Inv ON CA.RefRecId = Inv.InvoiceId /* Logic assumes linking via Invoice Number or manual mapping might be needed depending on RefTableId */
WHERE CA.RefEntityName = 'CustInvoiceTable'

UNION ALL

/* 7. Dispute Under Review */
SELECT 
    Inv.InvoiceId,
    'Dispute Under Review' AS Activity,
    CD.ModifiedDateTime AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    CD.ModifiedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CaseDetailEntity CD
JOIN dbo.CaseAssociationEntity CA ON CD.CaseId = CA.CaseId AND CD.DataAreaId = CA.DataAreaId
JOIN InvoiceBasics Inv ON CA.RefRecId = Inv.InvoiceId
WHERE CD.Status = 'InProcess'

UNION ALL

/* 8. Dispute Resolved */
SELECT 
    Inv.InvoiceId,
    'Dispute Resolved' AS Activity,
    CD.ClosedDateTime AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    CD.ModifiedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CaseDetailEntity CD
JOIN dbo.CaseAssociationEntity CA ON CD.CaseId = CA.CaseId AND CD.DataAreaId = CA.DataAreaId
JOIN InvoiceBasics Inv ON CA.RefRecId = Inv.InvoiceId
WHERE CD.Status = 'Closed'

UNION ALL

/* 9. Credit Memo Issued */
SELECT 
    T1.InvoiceId,
    'Credit Memo Issued' AS Activity,
    T1.InvoiceDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    T1.CustomerAccount,
    NULL,
    T1.InvoiceAmount,
    T1.DueDate,
    NULL,
    NULL,
    T1.CompanyCode,
    0
FROM dbo.CustInvoiceJournalHeaderEntity T1
WHERE T1.InvoiceAmount < 0

UNION ALL

/* 10. Interest Note Generated */
SELECT 
    Inv.InvoiceId,
    'Interest Note Generated' AS Activity,
    IJ.InterestDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    IJ.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    1
FROM dbo.CustInterestJournalEntity IJ
JOIN InvoiceBasics Inv ON IJ.AccountDisplayValue = Inv.CustomerAccount AND IJ.DataAreaId = Inv.CompanyCode
/* Note: Direct link to specific Invoice ID is often via CustInterestTrans, requiring an additional join */

UNION ALL

/* 11. Partial Payment Posted */
SELECT 
    Inv.InvoiceId,
    'Partial Payment Posted' AS Activity,
    Sett.TransDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Sett.SettleAmountCur AS InvoiceAmount,
    Inv.DueDate,
    Sett.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CustSettlementEntity Sett
JOIN dbo.CustTransactionEntity Trans ON Sett.TransRecId = Trans.RecId
JOIN InvoiceBasics Inv ON Trans.Invoice = Inv.InvoiceId AND Trans.DataAreaId = Inv.CompanyCode
WHERE ABS(Sett.SettleAmountCur) < ABS(Trans.AmountCur) AND Sett.SettleAmountCur <> 0

UNION ALL

/* 12. Full Payment Received */
SELECT 
    Inv.InvoiceId,
    'Full Payment Received' AS Activity,
    Sett.TransDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Sett.SettleAmountCur AS InvoiceAmount,
    Inv.DueDate,
    Sett.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CustSettlementEntity Sett
JOIN dbo.CustTransactionEntity Trans ON Sett.TransRecId = Trans.RecId
JOIN InvoiceBasics Inv ON Trans.Invoice = Inv.InvoiceId AND Trans.DataAreaId = Inv.CompanyCode
WHERE ABS(Sett.SettleAmountCur) >= ABS(Trans.AmountCur)

UNION ALL

/* 13. Bank Statement Matched */
SELECT 
    Inv.InvoiceId,
    'Bank Statement Matched' AS Activity,
    Bank.TransDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Bank.AmountCur AS InvoiceAmount,
    Inv.DueDate,
    NULL,
    NULL,
    Inv.CompanyCode,
    1
FROM dbo.BankAccountTransEntity Bank
JOIN dbo.CustSettlementEntity Sett ON Bank.Voucher = Sett.OffsetTransVoucher AND Bank.DataAreaId = Sett.DataAreaId
JOIN dbo.CustTransactionEntity Trans ON Sett.TransRecId = Trans.RecId
JOIN InvoiceBasics Inv ON Trans.Invoice = Inv.InvoiceId

UNION ALL

/* 14. Payment Written Off */
SELECT 
    Inv.InvoiceId,
    'Payment Written Off' AS Activity,
    Trans.TransDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Trans.AmountCur AS InvoiceAmount,
    Inv.DueDate,
    Trans.CreatedBy AS [User],
    NULL,
    Inv.CompanyCode,
    0
FROM dbo.CustTransactionEntity Trans
JOIN InvoiceBasics Inv ON Trans.Invoice = Inv.InvoiceId AND Trans.DataAreaId = Inv.CompanyCode
WHERE Trans.TransactionType = 'WriteOff'

UNION ALL

/* 15. Invoice Cleared */
SELECT 
    Inv.InvoiceId,
    'Invoice Cleared' AS Activity,
    Trans.ClosedDate AS EventTimestamp,
    'D365 F&O' AS SourceSystem,
    GETDATE() AS LastDataUpdate,
    Inv.CustomerAccount,
    NULL,
    Inv.InvoiceAmount,
    Inv.DueDate,
    NULL,
    NULL,
    Inv.CompanyCode,
    1
FROM dbo.CustTransactionEntity Trans
JOIN InvoiceBasics Inv ON Trans.Invoice = Inv.InvoiceId AND Trans.DataAreaId = Inv.CompanyCode
WHERE Trans.ClosedDate IS NOT NULL AND Trans.ClosedDate <> '1900-01-01'

import requests
import pandas as pd
import datetime
from datetime import  timedelta
import json

class=class="hl-string">"hl-comment"># === CONFIGURATION ===
config = {
    class="hl-string">"resource": class="hl-string">"https://[YourOrg].operations.dynamics.com",
    class="hl-string">"tenant_id": class="hl-string">"[Your-Tenant-ID]",
    class="hl-string">"client_id": class="hl-string">"[Your-Client-ID]",
    class="hl-string">"client_secret": class="hl-string">"[Your-Client-Secret]",
    class="hl-string">"company_code": class="hl-string">"USMF",  class=class="hl-string">"hl-comment"># Example Company Code
    class="hl-string">"start_date": class="hl-string">"2023-01-01T00:00:00Z"
}

class=class="hl-string">"hl-comment"># === AUTHENTICATION ===
def get_token(config):
    token_url = fclass="hl-string">"https://login.microsoftonline.com/{config['tenant_id']}/oauth2/token"
    payload = {
        class="hl-string">'grant_type': class="hl-string">'client_credentials',
        class="hl-string">'client_id': config[class="hl-string">'client_id'],
        class="hl-string">'client_secret': config[class="hl-string">'client_secret'],
        class="hl-string">'resource': config[class="hl-string">'resource']
    }
    response = requests.post(token_url, data=payload)
    if response.status_code == 200:
        return response.json().get(class="hl-string">'access_token')
    else:
        raise Exception(fclass="hl-string">"Auth Failed: {response.text}")

class=class="hl-string">"hl-comment"># === ODATA FETCHER ===
def get_odata_data(token, entity_url, filter_str):
    headers = {class="hl-string">'Authorization': fclass="hl-string">'Bearer {token}', class="hl-string">'Accept': class="hl-string">'application/json'}
    results = []
    next_link = fclass="hl-string">"{config['resource']}/data/{entity_url}?$filter={filter_str}&$format=json"
    
    while next_link:
        print(fclass="hl-string">"Fetching: {next_link}")
        try:
            res = requests.get(next_link, headers=headers)
            if res.status_code != 200:
                print(fclass="hl-string">"Error fetching data: {res.text}")
                break
            data = res.json()
            results.extend(data.get(class="hl-string">'value', []))
            next_link = data.get(class="hl-string">'@odata.nextLink', None)
        except Exception as e:
            print(fclass="hl-string">"Exception: {e}")
            break
    return pd.DataFrame(results)

class=class="hl-string">"hl-comment"># === MAIN EXTRACTION ===
def main():
    token = get_token(config)
    all_events = []
    company_filter = fclass="hl-string">"dataAreaId eq '{config['company_code']}'"
    date_filter = fclass="hl-string">"InvoiceDate ge {config['start_date']}"

    class=class="hl-string">"hl-comment"># 1. INVOICE BASIC EVENTS (Posted, Dispatched, Credit Memo, Cleared)
    class=class="hl-string">"hl-comment"># Entity: CustomerInvoices (or SalesInvoiceHeaders)
    print(class="hl-string">"Processing Invoices...")
    df_inv = get_odata_data(token, class="hl-string">"CustomerInvoices", fclass="hl-string">"{company_filter} and {date_filter}")
    
    if not df_inv.empty:
        class=class="hl-string">"hl-comment"># Activity: Invoice Posted
        posted = df_inv.copy()
        posted[class="hl-string">'Activity'] = class="hl-string">'Invoice Posted'
        posted[class="hl-string">'EventTimestamp'] = posted[class="hl-string">'InvoiceDate']
        all_events.append(posted)

        class=class="hl-string">"hl-comment"># Activity: Invoice Dispatched (Assumed same day as posted if not tracked separately)
        dispatched = df_inv.copy()
        dispatched[class="hl-string">'Activity'] = class="hl-string">'Invoice Dispatched'
        dispatched[class="hl-string">'EventTimestamp'] = dispatched[class="hl-string">'InvoiceDate']  class=class="hl-string">"hl-comment"># Often inferred
        all_events.append(dispatched)

        class=class="hl-string">"hl-comment"># Activity: Credit Memo Issued
        credit_memos = df_inv[df_inv[class="hl-string">'InvoiceAmount'] < 0].copy()
        credit_memos[class="hl-string">'Activity'] = class="hl-string">'Credit Memo Issued'
        credit_memos[class="hl-string">'EventTimestamp'] = credit_memos[class="hl-string">'InvoiceDate']
        all_events.append(credit_memos)

        class=class="hl-string">"hl-comment"># Activity: Invoice Cleared (Closed)
        class=class="hl-string">"hl-comment"># Note: ClosedDate might need to be cast to datetime
        cleared = df_inv[df_inv[class="hl-string">'ClosedDate'].notnull()].copy()
        if not cleared.empty:
            cleared[class="hl-string">'Activity'] = class="hl-string">'Invoice Cleared'
            cleared[class="hl-string">'EventTimestamp'] = cleared[class="hl-string">'ClosedDate']
            all_events.append(cleared)

        class=class="hl-string">"hl-comment"># Activity: Due Date Passed (Calculated)
        class=class="hl-string">"hl-comment"># Logic: If not closed, and DueDate < Now
        now = datetime.datetime.now()
        overdue = df_inv[(df_inv[class="hl-string">'ClosedDate'].isnull())].copy()
        class=class="hl-string">"hl-comment"># Convert DueDate to datetime objects for comparison
        overdue[class="hl-string">'DueDate_DT'] = pd.to_datetime(overdue[class="hl-string">'DueDate'])
        overdue = overdue[overdue[class="hl-string">'DueDate_DT'] < now]
        if not overdue.empty:
            overdue[class="hl-string">'Activity'] = class="hl-string">'Due Date Passed'
            class=class="hl-string">"hl-comment"># Timestamp is the day it became overdue
            overdue[class="hl-string">'EventTimestamp'] = overdue[class="hl-string">'DueDate'] 
            all_events.append(overdue)

    class=class="hl-string">"hl-comment"># 2. PAYMENTS (Partial, Full, WriteOff)
    class=class="hl-string">"hl-comment"># Entity: CustomerPaymentJournalLines
    print(class="hl-string">"Processing Payments...")
    class=class="hl-string">"hl-comment"># Note: Filter by TransDate usually
    df_pay = get_odata_data(token, class="hl-string">"CustomerPaymentJournalLines", fclass="hl-string">"{company_filter}")
    
    if not df_pay.empty:
        class=class="hl-string">"hl-comment"># Activity: Partial vs Full Payment
        class=class="hl-string">"hl-comment"># Logic requires comparing payment amount to invoice balance. simplified here based on Amount
        class=class="hl-string">"hl-comment"># Assuming we join with invoices later, strictly classifying based on available fields
        class=class="hl-string">"hl-comment"># Here we assume a field class="hl-string">'PaymentStatus' or we treat all as Partial unless marked Settled
        
        class=class="hl-string">"hl-comment"># Full Payment
        full_pay = df_pay.copy()
        full_pay[class="hl-string">'Activity'] = class="hl-string">'Full Payment Received'
        full_pay[class="hl-string">'EventTimestamp'] = full_pay[class="hl-string">'TransDate']
        all_events.append(full_pay)
        
        class=class="hl-string">"hl-comment"># Partial Payment (In a real scenario, this requires logic checking settlement vs invoice total)
        class=class="hl-string">"hl-comment"># Adding a duplicate row for demonstration of structure
        partial_pay = df_pay[df_pay[class="hl-string">'Amount'] < 1000].copy() class=class="hl-string">"hl-comment"># Placeholder logic
        partial_pay[class="hl-string">'Activity'] = class="hl-string">'Partial Payment Posted'
        partial_pay[class="hl-string">'EventTimestamp'] = partial_pay[class="hl-string">'TransDate']
        all_events.append(partial_pay)

        class=class="hl-string">"hl-comment"># Activity: Payment Written Off
        class=class="hl-string">"hl-comment"># Filter by specific Transaction Type or Journal Name
        write_off = df_pay[df_pay[class="hl-string">'JournalName'].str.contains(class="hl-string">'WriteOff', case=False, na=False)].copy()
        write_off[class="hl-string">'Activity'] = class="hl-string">'Payment Written Off'
        write_off[class="hl-string">'EventTimestamp'] = write_off[class="hl-string">'TransDate']
        all_events.append(write_off)

    class=class="hl-string">"hl-comment"># 3. COLLECTIONS (Reminders, Promise to Pay)
    class=class="hl-string">"hl-comment"># Entity: CollectionLetterJournals
    print(class="hl-string">"Processing Collections...")
    df_col = get_odata_data(token, class="hl-string">"CollectionLetterJournals", fclass="hl-string">"{company_filter}")
    if not df_col.empty:
        reminders = df_col.copy()
        reminders[class="hl-string">'Activity'] = class="hl-string">'Payment Reminder Sent'
        reminders[class="hl-string">'EventTimestamp'] = reminders[class="hl-string">'LetterDate']
        all_events.append(reminders)

    class=class="hl-string">"hl-comment"># Entity: CustomerPromiseToPay
    df_promise = get_odata_data(token, class="hl-string">"CustomerPromiseToPay", fclass="hl-string">"{company_filter}")
    if not df_promise.empty:
        promises = df_promise.copy()
        promises[class="hl-string">'Activity'] = class="hl-string">'Promise to Pay Received'
        promises[class="hl-string">'EventTimestamp'] = promises[class="hl-string">'CreatedDateTime']
        all_events.append(promises)

    class=class="hl-string">"hl-comment"># 4. DISPUTES (Opened, Review, Resolved)
    class=class="hl-string">"hl-comment"># Entity: CaseDetails (requires filtering for Collections/Dispute category)
    print(class="hl-string">"Processing Disputes...")
    df_case = get_odata_data(token, class="hl-string">"CaseDetails", fclass="hl-string">"{company_filter} and Category eq 'Collections'")
    if not df_case.empty:
        class=class="hl-string">"hl-comment"># Opened
        opened = df_case.copy()
        opened[class="hl-string">'Activity'] = class="hl-string">'Dispute Case Opened'
        opened[class="hl-string">'EventTimestamp'] = opened[class="hl-string">'CreatedDateTime']
        all_events.append(opened)

        class=class="hl-string">"hl-comment"># Under Review (In Process)
        in_process = df_case[df_case[class="hl-string">'Status'] == class="hl-string">'InProcess'].copy()
        in_process[class="hl-string">'Activity'] = class="hl-string">'Dispute Under Review'
        in_process[class="hl-string">'EventTimestamp'] = in_process[class="hl-string">'ModifiedDateTime']
        all_events.append(in_process)

        class=class="hl-string">"hl-comment"># Resolved (Closed)
        resolved = df_case[df_case[class="hl-string">'Status'] == class="hl-string">'Closed'].copy()
        resolved[class="hl-string">'Activity'] = class="hl-string">'Dispute Resolved'
        resolved[class="hl-string">'EventTimestamp'] = resolved[class="hl-string">'ClosedDateTime']
        all_events.append(resolved)

    class=class="hl-string">"hl-comment"># 5. INTEREST
    class=class="hl-string">"hl-comment"># Entity: InterestNotes
    print(class="hl-string">"Processing Interest Notes...")
    df_interest = get_odata_data(token, class="hl-string">"InterestNotes", fclass="hl-string">"{company_filter}")
    if not df_interest.empty:
        interest = df_interest.copy()
        interest[class="hl-string">'Activity'] = class="hl-string">'Interest Note Generated'
        interest[class="hl-string">'EventTimestamp'] = interest[class="hl-string">'NoteDate']
        all_events.append(interest)

    class=class="hl-string">"hl-comment"># 6. BANK RECONCILIATION
    class=class="hl-string">"hl-comment"># Entity: BankReconciliationLines (Placeholder for matching)
    print(class="hl-string">"Processing Bank Reconciliation...")
    class=class="hl-string">"hl-comment"># This entity availability varies by version
    df_bank = get_odata_data(token, class="hl-string">"BankReconciliationLines", fclass="hl-string">"{company_filter}")
    if not df_bank.empty:
        matched = df_bank[df_bank[class="hl-string">'Reconciled'] == True].copy()
        matched[class="hl-string">'Activity'] = class="hl-string">'Bank Statement Matched'
        matched[class="hl-string">'EventTimestamp'] = matched[class="hl-string">'TransactionDate']
        class=class="hl-string">"hl-comment"># Need to join with Invoice via Payment Reference ideally
        class=class="hl-string">"hl-comment"># For this script, we assume InvoiceNumber is present or mapped
        all_events.append(matched)

    class=class="hl-string">"hl-comment"># === UNIFICATION & EXPORT ===
    if not all_events:
        print(class="hl-string">"No events extracted.")
        return

    final_df = pd.concat(all_events, ignore_index=True)

    class=class="hl-string">"hl-comment"># Map columns to schema
    class=class="hl-string">"hl-comment"># Note: Column names class="hl-string">'InvoiceNumber', class="hl-string">'InvoiceAccount' etc. depend on exact Entity schema
    class=class="hl-string">"hl-comment"># You may need to rename based on your D365 entity fields, e.g., class="hl-string">'InvoiceNum' -> class="hl-string">'InvoiceNumber'
    schema_map = {
        class="hl-string">'InvoiceNumber': class="hl-string">'InvoiceNumber',
        class="hl-string">'InvoiceId': class="hl-string">'InvoiceNumber', class=class="hl-string">"hl-comment"># Alternative common name
        class="hl-string">'InvoiceAccount': class="hl-string">'CustomerAccount',
        class="hl-string">'CustomerAccount': class="hl-string">'CustomerAccount',
        class="hl-string">'InvoiceAmount': class="hl-string">'InvoiceAmount',
        class="hl-string">'Amount': class="hl-string">'InvoiceAmount', class=class="hl-string">"hl-comment"># Fallback for payments
        class="hl-string">'CurrencyCode': class="hl-string">'Currency',
        class="hl-string">'DueDate': class="hl-string">'DueDate',
        class="hl-string">'CreatedBy': class="hl-string">'User',
        class="hl-string">'BusinessUnit': class="hl-string">'BusinessUnit',
        class="hl-string">'DataAreaId': class="hl-string">'CompanyCode'
    }
    
    class=class="hl-string">"hl-comment"># Normalize columns
    for col in final_df.columns:
        if col in schema_map:
            final_df.rename(columns={col: schema_map[col]}, inplace=True)

    class=class="hl-string">"hl-comment"># Add constant fields
    final_df[class="hl-string">'SourceSystem'] = class="hl-string">'Microsoft D365'
    final_df[class="hl-string">'LastDataUpdate'] = datetime.datetime.now().isoformat()
    
    class=class="hl-string">"hl-comment"># Select final columns (fill missing with None)
    required_cols = [
        class="hl-string">'InvoiceNumber', class="hl-string">'Activity', class="hl-string">'EventTimestamp', class="hl-string">'SourceSystem', class="hl-string">'LastDataUpdate',
        class="hl-string">'CustomerAccount', class="hl-string">'CustomerGroup', class="hl-string">'InvoiceAmount', class="hl-string">'DueDate', class="hl-string">'User',
        class="hl-string">'BusinessUnit', class="hl-string">'CompanyCode', class="hl-string">'IsAutomated'
    ]
    
    for col in required_cols:
        if col not in final_df.columns:
            final_df[col] = None
            
    output_df = final_df[required_cols]
    
    class=class="hl-string">"hl-comment"># Export
    output_df.to_csv(class="hl-string">"AR_Event_Log.csv", index=False)
    print(class="hl-string">"Extraction complete. Saved to AR_Event_Log.csv")

if __name__ == class="hl-string">"__main__":
    main()