PeopleSoft Testing - Catch CreateProcessRequest error

I'm currently conducting component testing right now and one of the test conditions is to catch the error of CreateProcessRequest. I have this code:

/define run control parameters – see code below/

Local ProcessRequest &RQST;

&RUN_PO_BU = PO_HDR.BUSINESS_UNIT;

&RUN_PO_ID = PO_HDR.PO_ID;

&RUN_OPRID = PO_PNLS_WRK.OPRID;

&RunCntlID = "PS_PO_" | &RUN_PO_BU | &RUN_PO_ID | "_" | UniqueRunCntlID();

&MI_SQRProcess = "Test";

&RQST = CreateProcessRequest("SQR Process", &MI_SQRProcess);

&RQST.RunControlID = &RunCntlID;

&RQST.Schedule();

&instanceList = &RQST.ProcessInstance;

If &RQST.Status = 0 Then

    <do something>; 

Else

 Error MsgGet(99999, 99999, "%1 process with instance %2 returned a non->zero exit code(%3)", &MI_SQRProcess, &instanceList, &RQST.Status);