Please check the Image: https://postimg.cc/WFsrgnKc
Hi @pallav_aggarwal
The first line of the package marking is PMCXAxxx, this means is an preproduction part and don´t support UUID. In order to the UUID to work the package marking should be "MCXA153", for example.
Hope it helps you!
We are investigating your problem, but we would need more information about the marking code of the chip, please send us a photo of the chip.
Thanks.