This custom metadata type is used to provide information about the product model to the abstraction framework. This custom metadata type is part of the managed package and can't be modified.
This feature is part of the Communications Cloud managed package.
There are a large number of records in the VPLAbstractionLayerSetup custom metadata type. However, not all of the records that are listed here are currently in use. Also, many of these records are part of the managed package and can't be edited directly. If you need to modify any of these records due to updates in the product model, you can clone a record and then modify it.
To understand how this custom metadata is used to represent the product model in the abstraction framework, see Abstraction Framework and Use Custom Metadata to Represent Your Product Model.