Appian ACD201 Exam - Topic 4 Question 13 Discussion

Actual exam question for Appian's ACD201 exam

Question #: 13
Topic #: 4

[All ACD201 Questions]

You run a report on different employee transactions by using a View.

You encounter the following error: "a!queryEntity: An error occurred while retrieving the data."

What is the most likely root cause of this error?

AThe view doesn't have a column mapped as a primary key in its corresponding CDT.

BThe view contains a large number of rows, requiring more time to fetch the data.

CThe rule contains a missing syntax.

Show Suggested Answer

Suggested Answer: A

The most likely root cause is that the view doesn't have a column mapped as a primary key in its corresponding CDT. Appian requires a primary key mapping for querying views to ensure data integrity and identification.

by Stanford at Apr 09, 2026, 04:01 PM

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Ivette

18 days ago

I think B) could be a factor too, large data sets can slow things down.

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Dalene

23 days ago

A) is definitely the issue, no primary key mapping.

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Irene

1 month ago

I feel like I read that if the CDT isn't set up correctly, it can lead to errors like this. So option A seems pretty likely to me.

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Shawnee

1 month ago

I practiced a question similar to this, and I think syntax errors in rules can also lead to data retrieval issues. Maybe that's what's happening here?

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Loren

2 months ago

I'm not entirely sure, but I think if the view has too many rows, it might just take longer to load. Could that be the problem?

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Glendora

2 months ago

I remember something about primary keys being crucial for Views. If there's no column mapped as a primary key, that could definitely cause issues.

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