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This structure represents the unique key fields associated with identifying an expense type group. Whenever a resource enters an expense they must specify the type, like Airfare. If your organization has many expense types then you'll likely want to organize them into groups. That is where this structure comes in. You might define a group called Travel that encompasses the Airfare, Hotel, and Transportation types into one group. You can then generate reports based on expense group and get nicely rolled up information.

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