SP meaning in Messaging ?

A sole proprietorship , also known as a sole tradership, individual entrepreneurship or proprietorship, is a type of enterprise owned and run by one person and in which there is no legal distinction between the owner and the business entity. A sole trader does not necessarily work "alone"—it is possible for the sole trader to employ other people.

The sole trader receives all profits (subject to taxation specific to the business) and has unlimited responsibility for all losses and debts. Every asset of the business is owned by the proprietor and all debts of the business are the proprietor's. It is a "sole" proprietorship in contrast with partnerships (which have at least two owners).

A sole proprietor may use a trade name or business name other than their or its legal name. They may have to legally trademark their business name if it differs from their own legal name, the process varying depending upon country of residence.