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Certification Aid wants to update Contact data stored in a Data Extension using the REST API. What is required to achieve this? Choose 1.
To update Contact data stored in a Data Extension using the REST API, the Data Extension must be in an Attribute Group (A). This is necessary because the REST API interacts with Contact data through Attribute Groups, which organize Data Extensions and their relationships within Contact Builder.
Salesforce Marketing Cloud REST API
Contact Builder and Attribute Groups
A developer uses an API to send data to a Marketing Cloud data extension once every fiveminutes using the REST API. They notice data does not always write to the data extension, leading to data loss.
Which three best practices are recommended to avoid this issue? Choose 3 answers
To avoid data loss and ensure reliable data transfer to Marketing Cloud data extensions, follow these best practices:
Handle 'Not Authorized' Errors: If a 'Not Authorized' error occurs, it is likely due to an expired or invalid access token. Request a new access token and retry the API call.
Retry on Server Errors: If a server error occurs, it might be a temporary issue. Ensure the server is available and retry the call.
Token Expiry Management: Store the expiry time of the access token and request a new one before the old token expires to prevent authorization issues.
: Salesforce Marketing Cloud API Best Practices
A developer is notified the View Email As Web Page (VAWP) link, when clicked, displays the message, The system is temporarily unavailable. We apologize for any inconvenience. Please try again later.
What could be a possible cause for the error
The 'View Email As Web Page' (VAWP) link relies on the original email content being available. If the email used at the time of send was deleted, updated, or moved, the link will not be able to retrieve and display the content, resulting in the error message.
: Salesforce VAWP Documentation
A developer initiated a batch delete of Contacts in Contact Builder due to an import error during implementation. There are over two million records that need to be deleted.
Which two factors should be considered when batch deleting large volumes of contacts?Choose 2 answers
When batch deleting large volumes of contacts, it is important to consider the following factors:
Batch Deletion Limits: Up to one million records can be deleted in each batch. This helps manage and control the deletion process without overwhelming the system.
Suppression Status Visibility: The suppression status does not show for individual contacts until the entire batch processes. This means that you will not see the status updates for individual contacts until the deletion batch is fully processed.
: Salesforce Contact Deletion Process
A developer wants to expand their knowledge of Query Activities. They want to identify email addresses that have bounced in the last 30 days, along with the Bounce Reason and some additional subscriber specificdata; however, the SQL they have written does not return any records. Below is the SQL statement:
What updates should be made to ensure this SQL statement returns the desired results?
The SQL statement in question does not return any records because it is joining on the EmailAddress field, which is not present in the _Bounce Data View. The correct approach is to join using the SubscriberKey (or SubscriberID). Here is the corrected SQL statement:
SELECT s.EmailAddress, s.SubscriberKey, b.JobID, b.EventDate, b.SMTPBounceReason FROM _Subscribers s JOIN _Bounce b ON s.SubscriberKey = b.SubscriberKey WHERE b.EventDate > DateAdd(DAY, -30, GETDATE())
This ensures that the join is based on the SubscriberKey, which is a common field in both data views.
Salesforce Marketing Cloud Data Views
Query Activity Best Practices
NTO uses data extensions to manage the subscriber information usedfor their email sends, and those sends includes calls to update records with new or different subscriber information. The developer handling these records writes some AMPscript to check and see if the data extension containing those records updated usingan InsertDE() call if the record doesn't yet exist. Why would the developer receive an error stating the application cannot insert a duplicate value for the primary key in the data extension?
The error stating that the application cannot insert a duplicate value for the primary key in the data extension occurs because the InsertDE function cannot be used at send time. The InsertDE function is designed to insert records into a data extension, but it cannot handle the transactional nature of email sends where records might be added simultaneously.
Salesforce Marketing Cloud AMPscript InsertDE Function
Salesforce Marketing Cloud Data Extension Best Practices
A developer needs to display a value which hasbeen calculated using an AMPscript block. This value is stored in the variable named 'Label'.
Which two ways should the developer display this value in the body of an email? Choose 2 answers
Exam domains verified against: Official Salesforce MCE-Dev-201 exam guide, last checked October 2026.
You need to configure the account contact model in Marketing Cloud and understand how contact records link across different channels. Practice differentiating data extension types and their purposes, and work through the contact deletion process to see how data cascades when records are removed.
Sample question from this domain above: Q3
This domain covers AMPscript and server-side JavaScript syntax, functions, and best practices for both. You will encounter scenarios requiring you to exclude subscribers programmatically at send time and understand how Marketing Cloud processes AMPscript code during execution.
Sample question from this domain above: Q1
Study REST and SOAP APIs including objects, methods, and routes specific to Marketing Cloud. Focus on OAuth authentication, how access tokens fit into request headers, and how to evaluate response handling when API calls succeed, fail, or return unexpected data.
Configure imports using CSV, Excel, fixed-width and other file formats. Write SQL queries to extract and transform data, apply SQL best practices for performance and security, and manage send logs. Understand how contact deletion affects existing data and archival rules.
Identify ways to secure data in Marketing Cloud including encryption, permissions, and data classification. Learn and apply security best practices such as least privilege access, audit logging, and secure handling of sensitive customer data.
Common questions about the exam itself
