Exam CRT-450 topic 1 question 204 discussion

Actual exam question from Salesforce's CRT-450

Question #: 204
Topic #: 1

An org tracks customer orders on an Order object and the line items of an Order on the Line Item object. The Line Item object has a Master/Detail relationship to the Order object. A developer has a requirement to calculate the order amount on an Order and the line amount on each Line Item based on quantity and price.
What is the correct implementation?

A. Write a single before trigger on the Line Item that calculates the item amount and updates the order amount on the Order.
B. Write a process on the Line Item that calculates the item amount and order amount and updates the fields on the Line Item and the Order.
C. Implement the line amount as a numeric formula field and the order amount as a roll-up summary field.
D. Implement the line amount as a currency field and the order amount as a SUM formula field.

Show Suggested Answer

Suggested Answer: C 🗳️

by Brauliongon at Aug. 17, 2021, 10:19 a.m.

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Brauliongon

Highly Voted 2 years, 10 months ago

C. Implement the line amount as a numeric formula field and the order amount as a roll-up summary field.

upvoted 14 times

AK112233

2 years, 6 months ago

D is correct. You can't create roll-up summary field on formula fields

upvoted 1 times

irina_735

9 months, 2 weeks ago

If a roll-up summary field doesn’t contain cross-object field references or functions that derive values on the fly, such as NOW or TODAY, it can calculate the values of formula fields. https://help.salesforce.com/s/articleView?id=sf.fields_about_roll_up_summary_fields.htm&type=5

upvoted 1 times

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