Hello,

Collections capabilities have been unified into the Customer Service for Financial Services suite, integrating with Pega Marketing for contact and payment strategies to provide a seamless user and customer experience. The following Pega Academy courses are helpful: 

https://academy.pega.com/library/72/introduction-to-collections

https://academy.pega.com/library/71-or-later/introduction-to-collections-for-sales

https://academy.pega.com/library/72/introduction-to-customer-service-for-financial-services

https://academy.pega.com/library/72/implementing-pega-customer-service-financial-service

Thanks