Those working with 'SAP', I'm intrigued as to what you actually do and why the roles command such high salaries? 95k per annum for a SAP project manager? What the hell...
Speaking specifically for SAP HCM (SAP is a huge ERP beast with products that pretty much span the entire administration of a business, finance, HR, sales, stock management, procurement, payroll etc):
HCM breaks down to Human Capital Management which is effectively HR for the business. That specific module in SAP is responsible for all personnel administration and organisational data. All your employee's personal information, the hierarchy of your business and all the processes in place to keep such information up to date. When you consider that the company I work for has over 100,000 employees, it becomes a process that really has a business of its own.
Typically people in my line of work are responsible for the development, upkeep and analysis of this data and the systems impacted. In my case that's pretty huge impact, they have self service here, which is like an intranet where as an employee you can maintain your personal information, look for internal jobs, view your payslip etc. They have automated online form processing; a manager might fill out a form that transfers an employee, that form is intelligent and interacts with SAP to aggregate and push data. On top of all this you're developing for a global business in many cases, which means that each country has it's own legislation, and that has to be followed when storing and using employee information. And of course as technology grows so does the demand for your information to be impacted, so it's a constantly evolving beast. There are many many other processes in place but the two mentioned are a couple of the big ones that consume a lot of time.
I'd say 40% of my time consists of writing blueprints, functional specifications, change requests and filling out detailed paperwork to document anything I am doing or plan on doing. Probably 30% of my time is programming/configuration, for which SAP has it's own programming language called ABAP which you use to extend and sometimes even make the product work as it should. The other 30% is politics, meetings, business planning and analysis (reporting, statistics etc).