Telegram reject to send out alert because "error_code":400,"description":"Bad Request: message is too long"

Help
1

I have setup the Telegram transport and success to send out test message and some of alert rules is success but some of rules set was generate a too long message to caused Telegram reject to send out , here is the error message when try to run test-alert.php , it is possible to limit the send out message size.

Error message sample

string(21) “API ‘’ returned Error”
string(8) "Params: "
string(86) “Return: {“ok”:false,“error_code”:400,“description”:“Bad Request: message is too long”}”
ERROR: HTTP Status code 400

2

What alert rule is causing this and also what alert template?

3

The alert rule purpose is search the syslog and catch some login information sending from firewall, but the syslog message contain too many information, the select * statement will caused the Telegram reject to send due to message too long, I think if limit the output content within a few hundred when select * , it should be enough.