Hi,

Cascade variable is something that can be set in an Order Guide to basically go from that initial step...and then replicate to all variables named the same across attached items.

So if a user is a new hire and you have an order guide for that. On the order guide itself, you can ask basic stuff like: name, address, email, etc. Well if those variables on that order guide are named the same as the variables on items included in the order guide..then the values supplied by the user (that name, address, email) can then populate down to the order items automatically.

Here's official documentation on it: https://docs.servicenow.com/product/service_catalog_management/concept/c_CascadeTheOrderGuideVariabl...

Please mark my reply as Helpful/Correct. Thanks!