Pass the Salesforce Developers MCE-Dev-201 Questions and answers with CertsForce

A 401 Unauthorized HTTP status message indicates that the request was not authenticated properly. This error commonly occurs when the access token is missing, invalid, or expired.

Access Token Issues: The most common cause of a 401 error in REST API requests is related to the access token. The request must include a valid access token in the authorization header.

Example Authorization Header: Authorization: Bearer YOUR_ACCESS_TOKEN

Salesforce API Access Tokens

In AMPscript, comments can be added within a code block using the /* comment */ syntax. This allows developers to include notes or explanations without affecting the execution of the script.

Example:

ampscript

Copy code

%%[ /* This is a comment */ SET @var = "value" ]%%

Salesforce AMPscript Syntax Guide

To alternate the background color of rows in an HTML table using AMPscript, the MOD function can be used to determine if the row number is odd or even.

MOD Function: The MOD function returns the remainder of a division operation. By using MOD(@numerator, 2), the function returns 1 for odd rows and 0 for even rows, allowing the background color to be set accordingly.

AMPscript Example:

%%[ SET @numerator = 1 FOR @i = 1 TO RowCount(@rows) DO SET @color = IF MOD(@numerator, 2) == 1 THEN 'Red' ELSE 'White' ENDIF SET @numerator = ADD(@numerator, 1) ]%% %%[ NEXT @i ]%%

Salesforce AMPscript Functions

When logging unsubscribe events from a CloudPage using the LogUnsubEvent Execute Call, it's crucial to capture and provide both the SubscriberKey and the JobID. The SubscriberKey uniquely identifies the subscriber, while the JobID identifies the specific email job from which the subscriber is unsubscribing.

SubscriberKey: Identifies the subscriber in the Marketing Cloud.

JobID: Identifies the email job that triggered the unsubscribe event.

Salesforce LogUnsubEvent Documentation

When an email is sent to a list where subscribers have no associated Subscriber Key, Marketing Cloud will use the Email Address as the Contact Key by default. This ensures that each subscriber can still be uniquely identified even if they do not have a predefined Subscriber Key.

Salesforce Subscriber Key Concepts

The FormatCurrency AMPscript function is used to format a numeric value as a currency. To return a value of $6.96, the function would correctly format inputs like:

6.96 (B) - This is a direct numeric value that will be formatted to $6.96.

6.96 (D) - Same as above, the numeric value is directly formatted to $6.96.

Using FormatCurrency(6.96) in AMPscript will result in $6.96.

To dynamically populate the physical address of a company's locations using the variable @address and ensure the fastest possible performance for millions of subscribers, the recommended AMPscript solution is:

%%[ SET @address = Lookup("Building_Locations", "Address", "Id", @Id) ]%%

This solution uses the Lookup function, which retrieves a specific field value from a data extension based on the given criteria. It is efficient and performs well for high-volume sends.

To normalize customer data in a staging data extension where a text field named 'birthday' contains date values in various formats, the developer can use the following SQL keywords and functions:

CASE, ISDATE, CONVERT (A) - These functions can be used to handle different date formats and convert them into a consistent format.

CASE, ISDATE, CAST (C) - Similar to the above, CAST can be used to convert text to date format if ISDATE returns true.

Example SQL query:

SELECT CASE WHEN ISDATE(birthday) = 1 THEN CONVERT(DATE, birthday) ELSE NULL END AS normalized_birthday FROM StagingDataExtension

In AMPscript, the valid syntax for comments is /* comment */. This allows you to add comments within your AMPscript code for documentation or clarification purposes.

Salesforce AMPscript Syntax Guide