Hi @harshp!
The IEC60730B Safety library is supported by the LPC5536.
I am not sure why you see this message when building the SDK for this specific chip; I will check this with the SDK team.
However, you can instead build the SDK for the LPCXpresso55S36 evaluation board, since this board supports your LPC5536. You will not see the disclaimer message when doing this.
BR,
Edwin.