Group of related transactions identified in typical EDI transactions by a Functional Group Header (designated by GS) at the beginning, and the Functional Group Trailer (designated as GE) segment at the end. Many transaction sets can be included in the functional group but all transactions must be of the same type. A functional ID code identifies the transaction set within the group. For example: SS for 862 Shipping Schedule, PO for 850 Purchase Order.

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