Classifying Customer Input
Data definitions are what customers describe
about the format, data type, allowed values, or
default value of a data item or the composition of
a complex business data structure.
The ZIP code consists of five digits, followed by an
optional hyphen and an optional four digits that default
to 0000.
Request ID is a 6-digit system-generated sequential
integer, beginning with 1, that uniquely identifies each
request.