Yota SIM card does not want to work in a GSM modem, what to tweak?

Question

Network administration

There is a 32-port modem that works with the SMS Server Tool 3 server. The modem has Tele2 SIM cards and works fine. Now the task is to replace them with Yota SIM cards. And they refuse to work. The same SIM cards normally send SMS from a phone and a simple Huawey GSM modem, but they don’t want a modem from this (Chinese, on Wavecom modules).
The configuration of one modem in smsd.conf looks like this -
[modem1]
init = AT+CNMI=2,0,0,1,0
device = /dev/ttyUSB1
incoming = yes
hangup_incoming_call = yes
mode = new
baudrate = 115200
queues = modem1
report = yes
When trying to send SMS, we get:
Fail_reason: +CMS ERROR: 50 (Requested facility not subscribed)
The detailed log looks like this:
modem1: -> AT+CREG?
modem1: Command is sent, waiting for the answer
modem1: <- +CREG: 0.5 OK
modem1: Modem is registered to a roaming partner network
modem1: Selecting PDU mode
modem1: -> AT+CMGF=0
modem1: Command is sent , waiting for the answer
modem1: <- the OK
modem1: -> the AT + CMGS = 108
modem1: the Command is sent, waiting for the? answer
modem1: <->
modem1: -> 0031000B919780462100F50008FF5E00490052004B004E0045 0054003A0020041D0430002004410447043
modem1: the Command is sent, waiting for the? answer
modem1: <- + CMS ERROR: 50 (Requested facility not subscribed)
modem1: The modem answer was not OK: +CMS ERROR: 50 (Requested facility not subscribed)
modem1: Waiting 6 sec. before retrying