SAP Function SG_PS_GET_LAST_DAY_OF_MONTH - FM calculating the last day of a month

Parameter	Reference	Type	Length	Default	Optional	Text
DAY_IN	SYST-DATUM	D	8

Parameter	Reference	Type	Length	Text
LAST_DAY_OF_MONTH	SYST-DATUM	D	8

Exception	Text
DAY_IN_NOT_VALID