Customer Onboarding Form (COF) and procedures for building additional environments

Dear SAP,

Currently, the lawsuit is utilizing S/4HANA successful 3 landscapes astatine RISE.

In bid to upgrade S/4HANA, they volition beryllium contracting for an further sandbox S/4HANA environment.
For this reason, the CR process is being carried retired with TVRF.
Is a COF required erstwhile contracting for this further environment?

The COF includes web accusation and adjacent WebDispatcher, but this clip they are readying to hole a sandbox situation for S/4HANA and transcript the strategy from the existing environment.
Please archer maine the process for adding a sandbox situation to an existing landscape.