REFERENCE(IV_GUID_DOC) TYPE /SAPSLL/IVM_HEADER_ID
REFERENCE(EV_GUID_DOC) TYPE /SAPSLL/IVM_HEADER_ID
REFERENCE(IV_GUID_IVM) TYPE /SAPSLL/IVM_HEADER_ID
REFERENCE(IV_GUID_CUHD) TYPE /SAPSLL/IVM_HEADER_ID