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Guided MB-800 Domain 4
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MB-800 Study Guide

Domain 1: Set Up Business Central

  • Welcome to Business Central Free
  • Creating & Configuring Companies Free
  • Data Migration & Opening Balances Free
  • Users, Profiles & Security Free
  • Core Setup Essentials Free
  • Dimensions Deep Dive Free
  • Approval Workflows Free
  • M365 & Power Platform Integrations Free

Domain 2: Configure Financials

  • General Ledger Setup
  • Currencies, Deferrals & Exchange Rates
  • Chart of Accounts & Financial Reporting
  • Posting Groups Demystified
  • Journals & Bank Accounts
  • Accounts Payable
  • Accounts Receivable
  • Fixed Assets & Depreciation

Domain 3: Configure Sales and Purchasing

  • Inventory Foundations
  • Inventory Costing & Ledger Flow
  • Sales & Purchase Master Data
  • Pricing & Discounts

Domain 4: Perform Business Central Operations

  • Navigating & Customising Pages
  • Working with Data: Excel, OneDrive & Analysis
  • Purchase Processing
  • Sales Processing
  • Financial Documents
  • Payment Processing
  • Reconciliation, Allocations & FX Adjustments
  • Fixed Asset Transactions

MB-800 Study Guide

Domain 1: Set Up Business Central

  • Welcome to Business Central Free
  • Creating & Configuring Companies Free
  • Data Migration & Opening Balances Free
  • Users, Profiles & Security Free
  • Core Setup Essentials Free
  • Dimensions Deep Dive Free
  • Approval Workflows Free
  • M365 & Power Platform Integrations Free

Domain 2: Configure Financials

  • General Ledger Setup
  • Currencies, Deferrals & Exchange Rates
  • Chart of Accounts & Financial Reporting
  • Posting Groups Demystified
  • Journals & Bank Accounts
  • Accounts Payable
  • Accounts Receivable
  • Fixed Assets & Depreciation

Domain 3: Configure Sales and Purchasing

  • Inventory Foundations
  • Inventory Costing & Ledger Flow
  • Sales & Purchase Master Data
  • Pricing & Discounts

Domain 4: Perform Business Central Operations

  • Navigating & Customising Pages
  • Working with Data: Excel, OneDrive & Analysis
  • Purchase Processing
  • Sales Processing
  • Financial Documents
  • Payment Processing
  • Reconciliation, Allocations & FX Adjustments
  • Fixed Asset Transactions
Domain 4: Perform Business Central Operations Premium ⏱ ~13 min read

Payment Processing

Processing vendor payments, customer receipts, and payment registrations. Learn how to apply ledger entries, undo applications, and reverse posted journals.

Processing payments and receipts

☕ Simple explanation

Payment processing is the “cash register” side of accounting — money going out and money coming in.

Think of running a small shop. You pay your suppliers (vendor payments) and collect from customers (receipts). Sometimes you match the wrong payment to the wrong bill and need to undo it, or a journal entry was a mistake and you reverse it entirely.

At Coastal Traders, Marcus handles outgoing money (vendors) and Sofia handles incoming money (customers). Olivia oversees both.

Payment processing in Business Central covers three workflows: vendor payments (payment journals), customer receipts (cash receipt journals), and simplified payment registration for quick recording.

This module also covers applying entries (linking payment to invoice), unapplying entries (breaking that link), and reversing posted journals (creating opposite entries to undo a mistake).

Payment journals — paying vendors

The Payment Journal is where Marcus records money going out to vendors (Tell Me > “Payment Journals”).

Manual payment entry

For a one-off payment, Marcus fills in: Account Type = Vendor, Account No. = the vendor, Applies-to Doc. No. = the invoice, Bal. Account Type = Bank Account, Bal. Account No. = the bank. BC auto-fills defaults from the vendor card.

Suggest Vendor Payments — the batch approach

For the weekly payment run, Marcus uses Suggest Vendor Payments instead of typing lines by hand:

  1. Set Last Payment Date — BC finds all invoices due on or before this date
  2. Set Available Amount to cap the total payout
  3. Enable Find Payment Discounts to include invoices with available early-pay discounts
  4. Enable Use Vendor Priority to pay high-priority vendors first
  5. Choose Summarise per Vendor for one payment per vendor, or keep separate lines

BC generates payment journal lines matching the filters. Marcus reviews, adjusts, and posts.

💡 Exam tip: Suggest Vendor Payments

Last Payment Date = which invoices qualify. Available Amount = budget cap. Find Payment Discounts adds invoices where the discount deadline has not passed, even if the due date is later. Summarise per Vendor means you cannot apply to individual invoices after summarising.

Question

What does the Suggest Vendor Payments function do?

Click or press Enter to reveal answer

Answer

It scans all open vendor ledger entries due by the Last Payment Date, applies filters (available amount, priority, discounts), and auto-generates payment journal lines. The user reviews and posts them.

Click to flip back

Cash receipt journals — collecting from customers

The Cash Receipt Journal is the mirror image — it records money coming in from customers. Sofia uses it daily (Tell Me > “Cash Receipt Journals”).

Sofia fills in: Account Type = Customer, Account No. = the customer, Applies-to Doc. No. = the invoice, Bal. Account Type = Bank Account, Bal. Account No. = the receiving bank. Clicking Applies-to Doc. No. shows all open invoices for that customer.

Partial payments

If a customer sends $3,000 against a $5,000 invoice, Sofia enters $3,000 and applies it to the invoice. After posting, the customer ledger entry shows a remaining amount of $2,000 and the invoice stays Open until fully paid.

Question

What happens when a partial payment is applied to an invoice?

Click or press Enter to reveal answer

Answer

The payment reduces the Remaining Amount on the customer or vendor ledger entry. The entry stays Open until Remaining Amount reaches zero, at which point it changes to Closed.

Click to flip back

Payment registration — the quick way

The Payment Registration page (Tell Me > “Payment Registration”) is a simplified alternative. BC shows all open customer invoices — Sofia ticks Payment Made next to each paid invoice, adjusts amounts if needed, and clicks Post Payments. BC handles journal posting and application automatically.

💡 When to use which

Use Payment Registration when customers pay exact invoice amounts and you need a fast tick-and-post workflow. Use Cash Receipt Journals when you need partial payments, one payment across multiple invoices, foreign currency handling, or custom dimensions.

Cash Receipt Journal vs Payment Registration
FeatureCash Receipt JournalPayment Registration
ComplexityFull journal — set all fields yourselfTick-and-post checklist
Partial paymentsFull control over amountsBasic support
Multi-invoice paymentApply one payment to many invoicesOne tick per invoice only
Foreign currencyFull supportLimited
Best forComplex scenarios, high-volume ARQuick daily recording, small AR teams

Applying ledger entries

Application links a payment to an invoice so BC knows which bill has been paid. It happens automatically when you set Applies-to Doc. No. before posting, or through Payment Registration. But sometimes you need to apply manually after posting.

Manual application after posting

When Marcus posts a payment without specifying the invoice (the vendor sent a lump sum):

  1. Open the vendor card > Ledger Entries
  2. Select the payment entry > click Apply Entries
  3. Select the invoice(s) to apply against
  4. Click Set Applies-to ID, then Post Application

Applies-to Doc. No. links a payment to one specific invoice. Applies-to ID groups multiple entries for application — useful when one payment covers several invoices.

Question

What is the difference between Applies-to Doc. No. and Applies-to ID?

Click or press Enter to reveal answer

Answer

Applies-to Doc. No. links a payment to one specific invoice (one-to-one). Applies-to ID groups multiple entries together for application (one-to-many or many-to-many), useful when a single payment covers several invoices.

Click to flip back

Unapplying entries

Sofia applied a $2,500 customer payment to Invoice 1042, but the customer meant it for Invoice 1089. She needs to unapply first, then re-apply correctly.

  1. Open the customer card > Ledger Entries
  2. Find the incorrectly applied entry > click Unapply Entries
  3. Confirm — BC breaks the link and both entries return to Open with original remaining amounts restored
  4. Now apply the payment to the correct invoice

BC blocks unapplication if a later entry depends on it (like a payment discount), or the period is closed.

⚠️ Unapply does NOT delete anything

Unapplying does not remove or reverse posted entries. It simply breaks the link between payment and invoice, restoring the Remaining Amount on both. Think of it as “unlinking” not “undoing.”

Reversing posted journals

When a journal entry was posted with the wrong amount or account, you reverse it. BC creates exact opposite entries to cancel the original.

What can be reversed: general journal entries, payment journal entries, cash receipt journal entries.

What cannot be reversed: posted purchase/sales invoices, posted shipments/receipts — use credit memos instead.

The key rule: only journal-posted entries can be reversed.

How to reverse

  1. Open G/L Registers (Tell Me > “G/L Registers”)
  2. Find the register with the incorrect entry
  3. Click Reverse Register — BC creates opposite entries with the same posting date
  4. Review and post

To reverse a single entry from a multi-entry register, find it in General Ledger Entries and use Reverse Transaction.

💡 Exam tip: Which correction method to use
  • Unapply — breaks the link between a payment and invoice (no amounts change)
  • Reverse — creates opposite journal entries to cancel a journal posting entirely
  • Credit Memo — corrects a posted invoice by creating a new document with opposite amounts

Common trick question: “A posted purchase invoice has the wrong amount. How do you fix it?” The answer is NEVER reverse — use a purchase credit memo.

Apply vs Unapply vs Reverse
ActionWhat It DoesWhen to Use
ApplyLinks payment to invoice, closing the open entryPayment posted without specifying which invoice it covers
UnapplyBreaks the link between payment and invoicePayment was applied to the wrong invoice
ReverseCreates opposite journal entries to cancel the originalJournal entry should not exist (wrong amount or account)
Question

Can you reverse a posted purchase invoice?

Click or press Enter to reveal answer

Answer

No. Reverse only works for journal entries (general journals, payment journals, cash receipt journals). To correct a posted purchase invoice, you must create a purchase credit memo.

Click to flip back

Knowledge check

Knowledge Check

Marcus needs to pay all vendors with invoices due in the next 7 days, with a $50,000 budget and high-priority vendors first. Which function should he use?

Knowledge Check

Sofia applied a $1,200 customer payment to Invoice 3055, but the customer meant it for Invoice 3061. What should she do?

Knowledge Check

Olivia discovers a general journal entry posted with the wrong expense account. What is the correct fix?

🎬 Video coming soon


Next up: Bank reconciliation — matching your BC bank ledger to actual bank statements, handling differences, and closing the loop on all the payments Marcus and Sofia processed.

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Financial Documents

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Reconciliation, Allocations & FX Adjustments

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