Getting pdpdeact from BG95-m3

Why do I get pdpdeact message from the modem? What command should I issued to the module when I get pdpdeact ?

Hi Attacker145:
You can refer to this section of the TCP document:

You can use AT + QIACT to reactivate the PDP context.
If the activation fails,please check whether the module is successfully registered with the network.