Ramification of application snapshot size reaching over 150GB

Summary:

What would happen if the size of a single snapshot reaches 150GB?
The context here is to understand the impacts on the application or job failures if any that happens if a single snapshot reaches over 150GB mark.

Given that application disk size can be unlimited; what would happen to the snapshot. Will it be partial backup of the application till 150 GB leaving the rest out or the maintenance job will fail?