Just in case, is it possible to change the UUID?

[bull]

I use it. nRF52832 PCA10040 Vesion12.2.0

I am working on the ble_app_uart example as a base.

Just in case, is it possible to change the UUID?

And, what can be the addition of HID UUID?

[bull]

To replace a previously released product, I need to change the UUID. And I need to add another UUID.