Issue with error-text of custom error-code

Hi,

I am trying to generate a custom error-code using the following code

Class ISG.CommonBilling.Service.Test1 Extends EnsLib.HL7.Operation.TCPOperation
{
    ClassMethod khalid() As %Status
    {
        Set tSC=$$$ERROR("10001","I am here")
        write $$$GETERRORCODE(tSC)_$char(13,10)
        write $SYSTEM.Status.GetErrorText(tSC)
    }
}

And here is the output:

KINDRED>do ##class(ISG.CommonBilling.Service.Test1).khalid()
10001
ERROR #10001: Unknown status code: 10001 (I am here)

QUERY: Is there any way I can remove the part "Unknown status code: 10001 (...)" in the error-text?

Thanks in advance,
Khalid