How to add "Service Changed Indication"

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Hello,

We implemented a GATT server on Linux in Python. The code is based on
the code sample(https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/test/example-gatt-server).
The BlueZ version is 5.48. But we found a problem. The cached data in
/var/lib/bluetooth caused the mobile app to crash if some
characteristics are changed. After some research, we found "Under BLE
standard 'Generic Attribute'(0x1801), there is a Characteristic
'Service Changed' (0x2A05) with 'indicate' property", see
https://github.com/espressif/esp-idf/issues/1777.

The questions we have:
How to enable the "Service Changed Indication"(0x2A05) in the
bluetooth? Is there any code example in Python?

Thanks in advance!



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