The process to send the Application PDF from Salesforce to Perceptive Content has had a number of names of the years, including Loop/Trigger Loop process and ImageNow process. Nintex DocGen package is used to create a full application PDF of all application items and send the PDF through an SFTP (secure file transfer) to the Electronic Student Record in Perceptive Content.
This process describes how to update merge fields in DocGen templates. The process is the same for all DocGen templates.
You can test all Nintex DocGen letters on test records in Salesforce.
Here are instructions to view the Word Document template that controls the DocGen Package, including for Admissions decision letters, C&I Board Membership Agreements, and Admissions Application PDFs.