Q. Am I subject to the restrictions of the settings of "Trusted network" for the IIJ ID Service linked by DPF-API as well as the login policies for IIJ ID users as the token issuance source?
No, you are not.
The "Trusted Network" settings of the IIJ ID Service and the login policies configured for the IIJ ID user that issues the token do not affect the use of DPF-API.