> I don't work with SAP ..
Yeah.. that's just it. Your experience doesn't matter. Adjusting your business to fit SAP nearly as much as an unspoken requirement. It's not just a smart bit of wisdom people throw around. It's literally what you have to do if you want to have any hope of implementing SAP successfully, because it is such a colossal, messy charlie-foxtrot that there is no hope otherwise. Not even SAP's own people understand their own mess.