Hello,
Nordic Team.
I don't understand 'ecg cccd_handle number ' 'p_evt_write->handle number' difference.
I add for ECG Service on my bluetooth profile.
ECG Service in ecg data char 'notification on' but on_write in function cccd_handle number is difference.
But Heart Rate Service in 'cccd_handle' number is same.
here my function and source

In my case test scenario.
1. BOOT on
2. NRF Connect connect.
3. NRF Connect ECG Service Notification on

4. UART Log

**5. NRF Connect ECG Service Notification off **

6. UART Log
**7. NRF Connect Heart Rate Service Notification on **

8. UART Log
**9. NRF Connect Heart Rate Service Notification off **

10. UART Log
Thanks,
Bestregards,
kevin.ko