To OP
I worked for a company that uses SAP. SAP stated our company was the largest deployment they ever undertook. Started around 2007, 4 years of training, meetings and process mapping before building the software, ahead of deployment. Deployment is still ongoing today.
Support was, few SAP personnel, many Andersen's, Deloitte & Touche, many external contractors, many external SAP experienced users hired-in and internal I/T staff trained ahead. (However, internal U.S. I/T got whacked one day, over 450 lost their job. That U.S. work went off-shore to global contractors with a relation to SAP)
The big bucks were paid to the Andersen's Consulting. Learn as much as you can, there's always a need by a company that buys SAP as their software system. If you are mobile and well trained in SAP - the sky is your limit in earning potential.
SAP (venting here) FWIW
*SAP has the best sales people in the world.
*If a company goes cheap on the SAP frontend version purchase, that company will end up buying add-on's and bolt-on's that drive costs out of control. Either buy SAP's best version or don't buy at all - use another software.
*If you're Senior Level Finance/Accounting you love the reporting features of SAP. If you're Operations, Supply Chain, Sales or other, it's a pain to do your job, but those 10 to 15 extra SAP steps that are needed to process information (versus the previous steps to do your job in the former system) gets the Finance/Accounting folks the info they need...or want to model from.
*Functionality of the SAP system, works great if you get it working or when you get it working. The problem is, no one wants to change anything, line extensions, add options to products, etc. because they're afraid the system will not be functional or breakdown creating more costs to hire someone to fix the problem. System holds back business grow and product innovation, in my opinion.
*SAP sells the system to a business stating you can put your entire company on one system. The company I worked for was quite diverse and proved their theory as inaccurate. Also, out business in Brazil could use SAP, but it was against Brazilian laws to store a Brazilian business (finance/accounting) information on servers based in the U.S. - SAP didn't know that tidbit when the system was sold to us. We gained nothing from that standpoint, just another software program located offshore and no different then the system it replaced. Our company conducted business with manufacturing/processing operations in 67 countries - Brazil was not a one off for us.
*SAP is a totally illogical system. For most software systems, logic and some intuitive thinking can overcome a problem, but not in SAP. You cannot outguess SAP. Trying to apply logic to SAP system coding is not worth the time to think about as there is no logic.
*I never saw/worked on the "top of the line" SAP version, but I know people that have worked with it and love it. Our company went cheap and paid for it. The original cost was estimated at $2.3 billion and would be rolled out to the entire company in 7 years. At last check (as I am retired now), it's been 11 years, 40% of the company has the system, and they are in excess of $6.0 billion into the project.
*Off-shore contractor help,....through all the process mapping that took place for 4 years before the software build, if the company employee had an SAP problem and needed help, the off-shore person has a notebook of steps to take for problem resolution. If anything occurred outside the problem resolution steps in the notebook, the off-shore help stopped helping and shifted the problem to "Level 2" client help who responded within 72 hours....and you usually got a call at hour 71. When a plant operation goes down, there's not time to wait 72 hours for a response, but that's what the company signed up for. It was/is insanity. If Level 2 could not fix the issue, it went to Level 3 and Level 3 responded within 36 hours of notification.
Search the internet and view the comments and stories about SAP. NIKE, Waste Management, Hershey's, even the State of Tennessee had a website devoted to a class action suit against SAP. If I needed a business software, I'd look around..