Attribute Field missing in BEx Query Designer

Hello Experts,

I'm trying to create a report to show materials but there are some Attributes that I am unable to show in the Query.

I need to show the Label Type and Label Form in my Query.

When I check the Masterdata's Attribute, the fields are available.

But when I go to Query Designer, and expand the Attributes of 0MATERIAL, I don't see Label Type and Label Form.

May I know what I am doing wrong? Thank you.