SAP has multiple MES products that work with them. It all depends on what you are trying to do. The XMII is a great way to interface a shop floor system to SAP and in fact can be used to tie some disparate systems together. Are you in a process industry or discrete. Choose carefully as the implementation is the key and is expensive. SAP may resell some products but keep in mind just because the SAP rep gets compensation for the sale does not make it the best interfaced product.
I am new on this forum and don’t know if private messages can be exchanged. If there is a way send me some contact info and I would be glad to share my opinion.