Microsoft Updated MB-800 Exam Questions and Answers by wren

In Business Central, the Item Units of Measure page defines conversion rules between the base unit and alternate units.

The field Qty. per Unit of Measure specifies how many base units are contained in the alternate unit.

Since the base unit is PCS, and one BOX contains 20 PCS, the correct configuration is:

BOX → Qty. per Unit of Measure = 20.

The system then automatically converts between PCS and BOX when documents are created.

Setting PCS to 0.05 or 20 would be incorrect because PCS is already the base unit (it always has 1 as Qty. per Unit of Measure).

In Dynamics 365 Business Central, when handling purchase returns, businesses often want to ensure that the return uses the exact same cost as the original purchase transaction rather than the current cost at the time of return. This avoids discrepancies in costing and ensures accurate inventory valuation.

Requirement 1: Automatically conduct exact cost reversing for all new PO returns

This is achieved by enabling Exact Cost Reversing Mandatory in the Purchases & Payables Setup.

Once enabled, every new return order will automatically enforce exact cost reversing.

This setting guarantees that all future returns reference the original cost entry automatically.

Requirement 2: Manually conduct exact cost reversing on the individual return document line

On a specific purchase return order line, you can choose the original transaction to apply against.

This is done through Appl.-from Item Entry, where you manually link the return line to the original purchase receipt entry.

This ensures the return uses the correct cost from the selected historical entry instead of recalculating current cost.

Why not the other options?

Copy Item from Item No – Controls copying data from item cards, not related to cost reversing.

Get Posted Document Lines to Reverse – Used to pull posted document lines into a credit memo or return order, but it does not enforce exact cost reversing.

Automatic cost posting – Determines whether cost postings are automatic in G/L, unrelated to reversing.

Apply entries – Refers to applying customer/vendor ledger entries, not item cost reversing.

Reverse transaction – Is for reversing G/L transactions, not purchase returns costing.

Get Return Shipment Lines – Brings in return shipment lines, but not for enforcing cost reversal.

Thus, the correct configuration options are:

Exact Cost Reversing Mandatory (automatic for all new returns).

Appl.-from Item Entry (manual per individual return line).

Microsoft Learn References

Exact Cost Reversing in Business Central

Appl.-from Item Entry field explanation

Purchases & Payables Setup

In Dynamics 365 Business Central, you can restrict how dimensions and their values are combined when posting transactions:

Dimension Combinations page:

First, you define how two dimensions can be combined.

You can allow, block, or limit combinations.

If you want to restrict specific combinations of dimension values, you set the overall dimension relationship to Limited.

Set dimension combination to Limited:

By choosing Limited, you are saying “not all values between these two dimensions are allowed; I will specify which ones.”

Dimension Value Combinations page:

Once the dimensions are marked as Limited, you then configure allowed/blocked specific pairs of dimension values.

Block specific combinations:

On the Dimension Value Combinations page, mark the exact value pairs that are not allowed as Blocked.

This ensures that users cannot post purchase transactions with disallowed dimension value combinations.

Microsoft Learn References

Set Up Dimension Combinations

Work with Dimensions

Control Dimension Combinations

The Accounts Receivable (AR) team often needs to correct payment applications when cash is applied incorrectly. In Business Central, unapplied entries can be corrected in several ways:

From the Customer Card, under Navigate > Ledger Entries, users can select entries and use the Unapply Entries action.

From the Customer Ledger Entries page, users can directly select a posted application and choose Unapply Entries.

The Detailed Customer Ledger Entries page is used for analysis and shows how entries were applied, but the actual “Unapply” action is not typically performed here (it is read-only in terms of correction).

“Apply entries” can be done from Detailed Customer Ledger Entries, but unapplies are performed from Customer or Customer Ledger Entries.

Correct answers: A and C