Certified Marketing Cloud Developer

By Salesforce · Question Mode

QuestionQ49

VerifiedScripting and Automation

Northern Trail Outfitters uses data extensions to manage subscriber information for its email sends, and those sends include calls that update records with new or changed subscriber information. The developer responsible for these records writes AMPscript to check whether the data extension containing the records was updated by using an InsertDE() call when the record does not already exist.

Why would the developer receive an error that the application cannot insert a duplicate value for the primary key in the data extension?

Explanation

During an email send, Marketing Cloud Engagement writes the subscriber information to the data extension. An InsertDE() call then attempts to add a row with an already-present primary-key value, causing the duplicate-key error. UpsertDE() prevents this conflict by updating a matching row or inserting one when no match exists.

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