REFERENCE(IS_DATA) TYPE /SAPSLL/CORSTA OPTIONAL
REFERENCE(ES_Y) TYPE /SAPSLL/CORSTA
REFERENCE(ES_RESULT) TYPE /SAPSLL/CORSTA
REFERENCE(IV_SERVICE) TYPE /SAPSLL/CORSTA-SERV_STA
REFERENCE(IV_SERVIC) TYPE /SAPSLL/CORSTA-SERV_STA