12. The method of claim 11 , wherein said identifying one or more purchasing parameters further comprises identifying the one or more purchasing parameters based upon a configuration file defining relationships between the purchasing parameters and the one or more tag names.
12. The method of claim 11 , wherein said identifying one or more purchasing parameters further comprises identifying the one or more purchasing parameters based upon a configuration file defining relationships between the purchasing parameters and the one or more tag names. 13. The method of claim 12 , wherein the configuration file is one of a plurality of configuration files, wherein each configuration file defines different relationships between the purchasing parameters and the one or more tag names.