If you encounter the error repeatedly even after a factory reset, your PSN account may have a server-side flag (unlikely but possible). In that scenario, contact PlayStation Support – but be prepared for limited Vita-specific knowledge from generalist agents. np-9948-0 ps vita
The error code on the PlayStation Vita (PS Vita) is a lesser-known but distinct network authentication failure. Unlike common errors related to Wi-Fi signal strength (NP-9968-0) or PSN sign-in (NP-2244-2), NP-9948-0 specifically points to a problem with the device’s locally stored account credentials or its secure token exchange with Sony’s authentication servers .