PL-900 Practice Question: Describe the business value of Microsoft Power Platform
Exhibit
SalesByRegion = SUMMARIZE(Sales, Sales[Region], "TotalSales", SUM(Sales[Amount]))
Refer to the exhibit. A Power BI developer creates a DAX measure named 'SalesByRegion' as shown. The measure does not appear in the field list. What is the most likely issue?
⚠ Common exam trap
Test-takers frequently assume any valid DAX expression will automatically appear as a measure, overlooking the critical distinction between scalar and table-returning functions in Power BI.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The expression creates a table, not a scalar measure.
DAX measures must return a single scalar value (e.g., a number, date, or string) to appear in the Fields list of a Power BI report. The SUMMARIZE function returns a table with rows and columns, not a scalar, so Power BI treats it as a table expression and does not display it as a measure. Measures that return tables can only be used in other DAX expressions or as calculated tables, not directly in visuals.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The expression creates a table, not a scalar measure.
Why this is correct
Measures must return a single scalar value; SUMMARIZE returns a table.
- ✗
The 'Sales' table does not exist.
Why it's wrong here
Assuming it exists, the error is about the measure type.
- ✗
The SUMMARIZE function syntax is incorrect.
Why it's wrong here
The syntax is correct for creating a table.
- ✗
The measure name must be enclosed in single quotes.
Why it's wrong here
Measure names do not require quotes.
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