MWS alert: TN Server Used Threads Too Big

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1

Hi-
We get these alerts on MWS. Can anyone provide what needs to be done or checked on TN server threads to make it under control.

    Name:          TN Server Used Threads Too Big
    Instance name: TN Server Used Threads Too Big Host.HostName.xxxxxx.IntegrationServer.Port.4444.TNServer.Name.TNServer.TNTaskManager.Name.TNTaskManager.
    Description:   TN Server used threads is too big.
    Status:        Rule Violated
    Severity:
    Definition:    ((TNTaskManager/Used Threads by TN Task Manager/Reading_Value) / (TNTaskManager/Max Threads by TN Task Manager/Reading_Value)) >= (0.9)
    Evaluation:     1 interval of  /  compare.greaterThanOrEqual 0.9
    URL:           
    Rule type:     KPI
    SLA:           No

Thanks for any inputs.