How to handle mobile OTP while running load on web application.

Hi, 

Now days we are getting challenge with respect to test user below are the challenges:

1- Due to AD Authentication we are unable to get test users as we need to configure additional security on users result Mobile configuration for each user.

Note : its not possible to remove authentication in lower environment.

2- As of now I can user only one user but How to enter OTP while running VUser in controller ? ( In scripting I am entering OTP manually using wait for that time period ).

please let me know is there any solution for this - as this became show stopper for my work. I cant do any thing due to security and mobile OTP for each Test users.