SAP ABAP Message Class TZS1 (Time Zone Support) is used by

• Class (3)
• Function Module (3)
• Program (2)

#	Object Type	Object Name	Object Description	Package	Structure Package	Software Component
1	Function Module	TZS1_CHECK_SELOPT_DATE	Check if select option for date is usable for time zone	PM_TZ_CORE	APPL	SAP_APPL
2	Function Module	TZS1_CHECK_SELOPT_TIME	Check if select option for time is usable for time zone	PM_TZ_CORE	APPL	SAP_APPL
3	Function Module	TZS1_RANGE_DATE_TIME_TO_SYSTEM	Converts a date range vom session time to system time	PM_TZ_CORE	APPL	SAP_APPL