STM32L452CEU6 48QFPN STOP mode issue

[Midhun_Raj]

Hi,
We are using STM32L452CEU6 with 48QFPN package and trying implement sleep mode 2 inside Azure rtos threadx. But the device is not entering stop mode even after calling the HAL_PWREx_EnterSTOP2Mode(). But it works fine if I call it before calling MX_ThreadX_Init(). Could anyone can help to find out the issue.