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.
Retailers are vendors of products to consumers. In information technology as well as in other industries, the term is commonly applied to suppliers of goods and services to other companies. A tier 1 vendor is a large and well-known vendor, often enjoying national or international recognition and acceptance. Tier 1 vendors may be both manufacturers and value-added resellers (VAR s). A tier 2 vendor is a smaller and less well-known provider that is often also limited in its geographic coverage as well.