I am reviewing old Custom code that we have in our architecture, and I have noticed there are some mentions about DMS as
etc. What is this related to?
DMS stands for an external product called :
Delegated Management Services (DMS)
This is a CA product, which some sites use to maintain user entries in a Directory.
It supports self-registration, self-service profile management and help desk functionality.
DMS2 has been superseded by a new product from CA called IdentityManager.
You will find also more information about the DMS API and the details in the SDK documentation itself :
Chapter 11: DMS Workflow API
(Programming Guide for C r12.0 SP3)