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GS06

GS06 element of the GS header, X12 group control numbers.

Definition

GS06 (Group Control Number) is a 1- to 9-position numeric assigned by the sender and unique within an interchange. GE02 repeats the same value to close the functional group; this number is also the one a 997 functional acknowledgement cites in AK1/AK2 to bind the acknowledgement to the originating group.

Origin

Defined in the ASC X12 Functional Group Structures, published by the Accredited Standards Committee X12 (ANSI ASC X12).

Example in context

GS*PO*SENDER*RECEIVER*20260620*1430*1430*X*004010~ … GE*5*1430~

  • ST02 — transaction set control number.
  • X12-997-AK1 — segment that cites this group number.

Last updated: June 20, 2026