Windows might tell you that you can't open it, or in the worst case, you might encounter a XPF file related error message. Before you can open a XPF file, you'll need to figure out what kind of file the XPF file extension refers to.
A vendor, or a supplier, is a supply chain management term that means anyone who provides goods or services to a company or individuals. A vendor often manufactures inventoriable items, and sells those items to a customer. Typically vendors are tracked in either a finance system or a warehouse management system.
The executive sponsor is typically a member of senior management who endorses the process improvement initiative. The process supplier is the source of input to the process being evaluated. The process owner is the person responsible for the quantity, quality and timeliness of the ultimate output from the process.