Xerox Corp, Stamford, Connecticut has been signed off by Standard & Poor’s Corp, which affirmed its single-A senior debt rating, and the other ratings on Xerox Corp and its Xerox Credit Corp and Xerox Mexicana SA de CV units, and assigned its preliminary single-A rating to Xerox Credit Corp’s $1,000m senior shelf registered debt. The outlook is stable and the ratings reflect the company’s core strength in document processing, Standard & Poor’s said. The ongoing divestiture of financial services businesses will enable Xerox to focus on its primary business and to repay associated debt.