Each Network Access Profile resource has a Networks subresource (NAP Networks ) that contains a list of allowed cellular networks to Super SIMs can connect.
The NAP Network resources in this subresource are a subset of all of the Network resources available from the Networks resource. You can add or remove NAP Network resources from the NAP Networks subresource at any time to change which cellular networks Super SIMs using the parent Network Access Profile resource can connect to.
The Sid used to add, remove, or identify NAP Network resources is the same as the Sid of the corresponding Network resource. You can filter the NAP Networks subresource the same way you can the Networks resource.
NetworkAccessProfile Network properties
A Network Access Profile Network resource (NAP Network) has the same representation and values as the corresponding available Network resource with the exception of the additional NetworkAccessProfileSid property that identifies the Network Access Profile the subresource belongs to.
POST https://supersim.twilio.com/v1/NetworkAccessProfiles/{NetworkAccessProfileSid}/Networks
To allow Super SIMs to connect to a cellular network represented by a Network resource, a NAP Network resource must be created. Use the sid of the Network resource you with to add in your create request to add the NAP Networks subresource.
For example, if you wish to allow Super SIMs to connect to AT&T US.
First, you need to know the sid of the Network resource that represents AT&T US. You could do that by reading through the list of Network resources or if you know the MCC and MNC identifiers, you can read Networks resource by MCC and MNC. You will find that the Sid of the Network resource representing AT&T US is HWd85b0262d6fc4c0b991bf8294596642e.
Now that you know the Sid of the Network resource you wish to add, pass in HWd85b0262d6fc4c0b991bf8294596642e into your create NAP Network resource request.