How can I get more information about which lookup failed in an SSIS lookup?

using System;
using System.Collections.Generic;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;

[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
    /// <summary>
    /// Variable identifying whether we had any rows
    /// </summary>
    bool Found;    

    /// <summary>
    /// Initialize our variable
    /// </summary>
    public override void PreExecute()
    {
        base.PreExecute();
        this.Found = false;
    }

    /// <summary>
    /// Error out the entire task if we found any rows
    /// </summary>
    public override void PostExecute()
    {
        base.PostExecute();

        if (this.Found)
        {
            bool cancel = true;
            ComponentMetaData.FireError(0, "SCR Lookup Employee", "Unmatched Employees found. See warning for more context", string.Empty, 0, out cancel);
        }
    }

    /// <summary>
    /// Emit warnings for all the bad rows and then flag the entire operation as having bad rows
    /// </summary>
    /// <param name="Row">The row that is currently passing through the component</param>
    public override void Input0_ProcessInputRow(Input0Buffer Row)
    {
        this.Found = true;
        string msg = string.Format("Research->{0}:{1}", Row.EmployeeID, string.Format("{0:yyyy-MM-dd}", Row.EffectiveDT));

        ComponentMetaData.FireWarning(0, "Unmatched Employees", msg, string.Empty, 0);
    }
}

USE SSISDB;
SET NOCOUNT ON;

DECLARE
    @operation_id bigint = 938;

WITH SRC AS
(
    SELECT
        OM.message
    ,   CHARINDEX('->', OM.message) AS arrow
    ,   CHARINDEX(':', OM.message, CHARINDEX('->', OM.message)) AS colon
    ,   LEN(OM.message) AS length
    ,   RIGHT(OM.message, LEN(OM.message) - CHARINDEX('->', OM.message) -1) AS elements
    FROM
        catalog.operation_messages AS OM
    WHERE
        OM.message_type= 110
        AND OM.message_source_type = 60
        AND OM.message LIKE '%research%'
        AND OM.operation_id = @operation_id
)
, PARSED AS
(
    SELECT
        SRC.message
    ,   CHARINDEX(':', SRC.elements) AS colon
    ,   LEN(SRC.elements) AS length
    ,   SRC.elements AS RelevantText
    ,   LEFT(SRC.elements, CHARINDEX(':', SRC.elements) -1) AS EmployeeID
    ,   RIGHT(SRC.elements, LEN(SRC.elements) - CHARINDEX(':', SRC.elements)) AS EventDate
    FROM
        SRC
)
SELECT
    P.message
,   P.RelevantText 
,   P.EmployeeID
,   P.EventDate
FROM
    PARSED AS P;

message RelevantText    EmployeeID  EventDate
DFT Load FactPayroll:Warning: Research->90132693:2011-05-25 90132693:2011-05-25 90132693    2011-05-25
DFT Load FactPayroll:Warning: Research->900432371:2011-05-25    900432371:2011-05-25    100432371   2011-05-25
DFT Load FactPayroll:Warning: Research->900443209:2011-05-25    900443209:2011-05-25    100443209   2011-05-25
DFT Load FactPayroll:Warning: Research->900443418:2011-05-25    900443418:2011-05-25    100443418   2011-05-25

USE SSISDB;

DECLARE @ExecutionID  BIGINT 

/*****************************************************************************
--  First create an execution instance.  Data taps are valid for the specified
--  execution instance only
*****************************************************************************/
EXEC catalog.create_execution 
        N'DW Folder',  --Folder name in SSISDB 
        N'DW Project', --Project name in SSISDB
        N'FactJobAction', --Package name in SSISDB
        NULL, --optional parameter to hold reference ID for later use
        0, --optional  parameter set to 1 if 32-bit runtime required
        @ExecutionID OUTPUT;

DECLARE @DataTapID BIGINT;

/******************************************************************************
--  Next create the actual data tap.  The parameters specified below deterimine
--  at which point in a specific package the data tap will be added.  
******************************************************************************/
EXEC catalog.add_data_tap
        @ExecutionID, --output from catalog.create_execution
        N'\Package\DFT Load FactJobAction', --PackagePath property value from data flow task in SSDT
        N'Paths[ALL DateSK.Union All Output 1]', --IdentificationString property value from data flow task in SSDT
        N'File.csv', --Desired Output file name
        NULL, --optional paramter to specify number of rows to log. NULL for all rows
        @DataTapID OUTPUT; --output ID


/******************************************************************************
--  This final block of code executes the package.  The data tap file output 
--  will be found in the %SSISRoot%\DataTaps directory upon completion
******************************************************************************/
EXEC catalog.start_execution 
        @ExecutionID;  --output from catalog.create_execution