How to delete or change a storage type in WM Cloud

Dear all,

How can I delete or change a storage type in WM Cloud.

I have created a storage type where the storage type template is set to "General storage"

This setting is not correct and will" also not be used in future purposes so I wanted to delete the storage type but this is not possible.
The functionality to delete in [More][Edit][Delete] is grayed out and not available.

If I go to [Details] to change the "General storage" into "Standard storage" the storage type template field can not be changed. Also in this view I cannot go for [More][Edit][Delete].

There are no materials, no bins and no other documents ongoing over this storage type .

What can I do?

I don't want it to to have it in production as Polluted data "Do Not Use!

Greetings,

Ray