I worked for a company that was switching over from old internal software to SAP. We actually had to change workflows to suit SAP. You see, they'd sold it on the premise that it was adaptable, and it was, but actually a SAP engineering team would need to make the modifications to every version and update that we were contracted to receive. This wasn't covered in the multi-million-euro contract, of course.
Given that SAP is quirky (to say the least) it typically requires some real world experience.