Segment Group Layout - PER (Period)

	TAG	NOM	OBLIGATOIRE	REPETITION
	XRH	Segment group header	Oui	1
	PER	Period	Oui	1
	DTM	Date/Time	Non	9
	MOA	Monetary amount	Non	9
	ROD	Risk Object	Non	9
	XRT	Segment group trailer	Oui	1