AAF generates two SMS OTP simultaneously

Hi, I have a AAF with a Cluster: - one Global Master DB and one DB Server.

When I use a SMS OTP, AAF sends two tokens like is shown in the Async log:

2022-09-28 11:56:54 (UTC-0500) INFO  [aucore.scripts.async_commander] worker begin 139883039127296 sms, workers 1

2022-09-28 11:56:54 (UTC-0500) INFO  [aucore.scripts.async_commander] worker begin 139883270932224 sms, workers 2

2022-09-28 11:56:55 (UTC-0500) INFO  [aucore.au.ap.messaging_otp_senders] Generic SMS sent: 200 <?xml version="1.0" encoding="utf-8"?>

<response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <action>sendmessage</action>

  <data>

    <errorcode>0</errorcode>

    <acceptreport>

      <statuscode>0</statuscode>

      <statusmessage>Message acepted for delivery</statusmessage>

      <messageid>e57ed16f-27b5-47c0-bd00-65a2c5ca9db8</messageid>

      <recipient>573211233321</recipient>

      <messagetype>SMS:TEXT</messagetype>

      <messagedata>Su codigo de autenticacion es: 312556</messagedata>

    </acceptreport>

  </data>

</response>

2022-09-28 11:56:55 (UTC-0500) INFO  [aucore.au.ap.messaging_otp_senders] Generic SMS sent: 200 <?xml version="1.0" encoding="utf-8"?>

<response xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

  <action>sendmessage</action>

  <data>

    <errorcode>0</errorcode>

    <acceptreport>

      <statuscode>0</statuscode>

      <statusmessage>Message acepted for delivery</statusmessage>

      <messageid>0d4daf6e-4763-4c64-8a0e-468342e14b25</messageid>

      <recipient>573211233321</recipient>

      <messagetype>SMS:TEXT</messagetype>

      <messagedata>Su codigo de autenticacion es: 997701</messagedata>

    </acceptreport>

  </data>

</response>

what could be happening?