REFERENCE(IS_PK) TYPE /SAPSLL/CUHD_PK_S OPTIONAL
REFERENCE(ES_PK) TYPE /SAPSLL/CUHD_PK_S
REFERENCE(IS_CUDH_PK) TYPE /SAPSLL/CUHD_PK_S
REFERENCE(IS_PK) TYPE /SAPSLL/CUHD_PK_S