A developer is writing a codeunit that deletes a customer record. Before deleting, the codeunit checks if the customer has any open sales orders. If there are open orders, the deletion should be prevented and a user-friendly message should be displayed. Which AL approach should the developer use?

Use the ASSERTERROR function to check the condition.

Use the ERROR function to raise an error with a custom message.

Use the CLEAR function to remove the open orders before deletion.

Use the MESSAGE function to display a warning and continue with the deletion.

A developer is writing a codeunit that processes a list of customer IDs. For each customer, the codeunit calls a procedure that may raise an error if the customer is on hold. The developer wants to continue processing the remaining customers even if one fails. Which AL statement should the developer use?

Use the TRY-CATCH statement to handle the error and continue the loop.

Use the ERROR function to catch the error and continue.

Use the CLEAR function to reset the error state.

Use the ASSERTERROR statement to ignore the error.

What is the purpose of the 'begin ... end;' block in AL?

To group multiple statements together

Microsoft Certified:Dynamics 365 Business Central Developer Associate

Domain 4Objective 3

Use AL to Extend Business Central MB-820 Practice Questions (Page 6)

Part of the Develop by using AL domain, which accounts for 15–20% of the MB-820 exam. Microsoft does not publish an official question count, but from its 100-minute exam (~40–65 total, ~6–13 in this domain), expect 2–4 from this objective — we provide 33 practice questions to prepare you well beyond it. (estimate)

33questions here

7free pages

10concepts

15–20%of the exam

Questions 26–30

26foundation · easy
Which AL function is used to open a file for reading?
Select an answer first
27application · medium
A developer is writing a codeunit that deletes a customer record. Before deleting, the codeunit checks if the customer has any open sales orders. If there are open orders, the deletion should be prevented and a user-friendly message should be displayed. Which AL approach should the developer use?
Select an answer first
28application · medium
A developer is writing a codeunit that processes a list of customer IDs. For each customer, the codeunit calls a procedure that may raise an error if the customer is on hold. The developer wants to continue processing the remaining customers even if one fails. Which AL statement should the developer use?
Select an answer first
29foundation · easy
Which AL data type is most appropriate for storing a decimal number with high precision, such as a monetary amount?
Select an answer first
30foundation · easy
What is the purpose of the 'begin ... end;' block in AL?
Select an answer first

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Use AL to Extend Business Central MB-820 Practice Questions (Page 6)

Questions 26–30

Which AL function is used to open a file for reading?

A developer is writing a codeunit that deletes a customer record. Before deleting, the codeunit checks if the customer has any open sales orders. If there are open orders, the deletion should be prevented and a user-friendly message should be displayed. Which AL approach should the developer use?

Which AL data type is most appropriate for storing a decimal number with high precision, such as a monetary amount?

What is the purpose of the 'begin ... end;' block in AL?

Keep studying — Develop by using AL