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Salesforce MCE-Dev-201 Exam - Topic 5 Question 10 Discussion

Posted by Gerald on May 05, 2026 at 11:07 AM

A developer needs to use the 'contacts/ route of the REST API to update records in a data extension.

What should the developer verify before making the API call?

Suggested Answer: D

Before using the 'contacts/' route of the REST API to update records in a data extension, the developer should verify that the data extension should be linked in an AttributeGroup in Contact Builder (D). This ensures that the data extension is part of the contact model and can be accessed and updated using the REST API.


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26 comments · newest first
BR
Brett 2 days ago
Right, so D is also a valid point. Linking in Attribute Group is essential.
LO
Loise 8 days ago
True, but if the data extension isn't linked, it won't work either.
TE
Teddy 13 days ago
Option A is also important. Contacts need to exist in All Subscribers first.
BR
Brett 18 days ago
Agreed! If they don't match, updates could fail.
LO
Loise 23 days ago
I think option C is crucial. Contact Key matching Subscriber Key is key for data integrity.
MA
Malcolm 28 days ago
Yeah, without that, the API call might fail.
TE
Terina 1 month ago
Overall, C seems the most critical to avoid issues.
TW
Twana 1 month ago
D could be overlooked, but linking is key for data access.
MA
Malcolm 1 month ago
B is also important if using Journey Builder.
TE
Terina 2 months ago
True, but C is more about data integrity.
TW
Twana 2 months ago
But what about A? Contacts should exist in All Subscribers first.
MA
Malcolm 2 months ago
Agreed! It ensures proper data joining.
TE
Terina 2 months ago
I think option C is crucial. Contact Key must match Subscriber Key.
CH
Cherelle 2 months ago
I’m surprised this isn’t more straightforward! Why all these checks?
TO
Tonette 2 months ago
B is a must! Can't use Journey Builder without that setup.
OL
Olive 3 months ago
Wait, is D really necessary? I thought it was optional.
RO
Roselle 3 months ago
Totally agree with C! Contact Key and Subscriber Key need to match.
RO
Ronald 3 months ago
A) Each contact should already exist in All Subscribers.
SU
Sunny 3 months ago
Linking the data extension in an Attribute Group sounds familiar, but I’m not confident if it’s essential for this specific API operation.
ER
Ernie 3 months ago
I feel like the Contact Key and Subscriber Key need to match for proper data handling, but I need to double-check that detail.
EL
Elvera 4 months ago
I remember something about Journey Builder needing to be set up with the data extension, but I can't recall if that's necessary for just updating records.
LA
Laura 4 months ago
I think we need to ensure that each contact exists in All Subscribers, but I'm not entirely sure if that's a strict requirement for the API call.
AL
Alishia 4 months ago
I feel like Journey Builder configuration might be a factor, but I can't remember if it directly impacts the API update process.
CH
Christa 5 months ago
I practiced a similar question where linking the data extension in an Attribute Group was crucial. I wonder if that's relevant here too.
MO
Moon 6 months ago
I think it's important to check if the Contact Key matches the Subscriber Key, but I can't recall if that's always necessary for updates.
KA
Kaitlyn 6 months ago
I remember something about needing the contact to exist in All Subscribers, but I'm not sure if that's a strict requirement for the API call.
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