Question : I need assistance with a SQL Query

I need help with the following query, I get an error every time I try running it.  Please let me know what i'm doing wrong.  Here is the query:

SELECT MONTH(MainSrc.RegisteredDate), AC2.AC_ChargeGroup AS ChargeGroupB, COUNT(AC2.AC_ChargeGroup)
FROM Source AS MainSrc
INNER JOIN JOB AS JH2 WITH (NOLOCK) ON MainSrc.ShipmentID = JS2.JH_JobNum
INNER JOIN Charge AS JC2 WITH (NOLOCK) ON JS2.JH_PK  = JC2.JR_JH
INNER JOIN ChargeCode AS AC2 WITH (NOLOCK) ON JC2.JR_AC = AC2.AC_PK
WHERE
(MainSrc.RegisteredDate >= '4/1/2010')
AND (MainSrc.RegisteredDate < '4/5/2010')
AND (MainSrc.Client = 'FORD')
GROUP BY MainSrc.RegisteredDate, ChargeGroupB
ORDER BY MainSrc.RegisteredDate

I GET THE FOLLOWING ERROR:
Msg 207, Level 16, State 1, Line 11
Invalid column name ''ChargeGroupB''.

Thanks in advance,
mrotor

Answer : I need assistance with a SQL Query

Your contractor will be creating an OUTGOING request on port 1935 to their server I am guessing. I think this test is testing a request for an incoming stream. Try reversing the rules for the test.