You can create an SvcV-1 just before finishing an OV-2 or in later stages of the architecture just before finishing the SV-1 or SV-2 views.
To create a SvcV-1 diagram
The SvcV-1 product also allows you to show the Capabilities and Service Specifications mapping and Service Specifications interactions with the system resources. You can model each Service Specifications internal structure directly in the compartment area of the element shape or using the SvcV-2 Services Resource Flow Internal Description diagram.
You can proceed to create SvcV-4 view as soon as the SvcV-1 has been completed.