SAP is bad news. Many large companies have thrown them out because the system is just a money pit that you just keep throwing money into. Several Christmas seasons ago they cost Hershey a huge amount of money because they promised that the system would be installed, implemented & fully functional for their big sales season but they weren't even close. Hershey kept them, the last that I read, but I think that there were huge "adjustments" to the billing.
They must have the best sales people in the world, though, because they sell that complicated mess as being "flexible" & the managements of the big companies still keep buying it. Also, they seem to be doing better than a lot of the ERP sellers because they are exploiting the PeopleSoft takeover of J.D. edwards & Oracle's attempted takeover of PeopleSoft.
The upside for any IT people is that once you have SAP knowlege the market has been relatively good, even through the latest recession.