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Validation master plan. From Wikipedia, the free encyclopedia. A Validation Master Plan, also referred to as VMP, outlines the principles involved in the qualification of a facility, defining the areas and systems to be validated, and provides a written program for achieving and maintaining a qualified facility.
Credit card numbers cannot be truly validated using regular expressions; final validation always requires some interaction with a credit card processing organization. However, regular expression validation can indeed be useful in trapping typos (like one digit too many or too few) before submitting any data anywhere. All credit cards follow a basic numbering schemeâan opening digit sequence followed by a specified number of digits. Weâll start with MasterCard.