求助!关于德国申根签表格reference那块的填写问题

reference那块一定要填吗？？？
听说reference那块都填预定酒店的信息，
可是很多信息比如Registration number,Location of register,Organization’s place of business (country),Organization’s objectives/area of activity


Name of register in which the organization is registered这些都要填吗？