HU Configuration for Storage Location

Hi everyone.

In the following point of config, there is something I do not understand.

I hope somebody can explain it to me.

HU Requirement for Storage Locations and Default Values for Deliveries

Are the Vendor and Customer needed in this table?

If they are, what purpose do they serve? What are they needed for?

And again, if they are, do they represent the Plant? or what?

Should they be created with special characteristics?

I know a lot of questions, But I do not understand.....

Thanks,

Alain