Match descriptor request from smarthings zigbee button

Why ZigBee smarthing’s devices like button, door window sensor, and smart plug keep sending match descriptor requests?

Explicit RX Indicator (API 2)

7E 00 1B 91 28 6D 97 00 01 04 98 27 C0 79 00 00 00 06 00 00 02 10 FD FF 04 01 01 19 00 00 12

Start delimiter: 7E
Length: 00 1B (27)
Frame type: 91 (Explicit RX Indicator)
64-bit source address: 28 6D 97 00 01 04 98 27
16-bit source address: C0 79
Source endpoint: 00
Destination endpoint: 00
Cluster ID: 00 06
Profile ID: 00 00
Receive options: 02
RF data: 10 FD FF 04 01 01 19 00 00
Checksum: 12

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