The purpose of this spreadsheet is to present an example of detailed requirements for a data export interface. The example is part of the Trips-R-You Flight Booking Case Study. It's purpose is to provide an integrated, end-to-end set of requirement examples. 

The following high-level requirement identifies the need for this interface:

"The system shall be able to report self-service booking flight seat sales and sale cancellations to the financial system."

Section 3.4 of the case study presents the scenario describing detailed discussions with stakeholders about their needs related to the above requirement. These discussions lead to the example detailed business requirements documented in this spreadsheet and the Data Dictionary. When those discussions were concluded, and the contents of this spreadsheet reviewed and signed-off, the following  'formal' detailed requirement was produced to represent the detailed requirements for this interface:

"The system shall be able to provide summarized booking sales in the form of general ledger posting transactions - as specified in DR017 - Self-service GL I/F v1.0"

NOTE: The Elements tab, where individual interface-relate fields are listed, includes both a 'Priority' and a 'Release' column. This allows recording detailed requirements that can individualy be removed or re-added into scope for the project by changing the priority. Any element in scope can be assigned to a 'later' release.