Question : Message has an invalid header - Biztalk 2006 R2

I have a Biztalk application that is running fine in my development
environment. When I deploy it to my staging environment, I get this error
when it starts to pickup messages:
"Message has an invalid header. It could be due to an error in 1st/2nd field
or the segment name is neither MSH nor FHS."
Anyone know what I need to do?
Any assistance is appreciated.

Answer : Message has an invalid header - Biztalk 2006 R2

I am equally mystified about the 12 tables statement!

However,  what ever your current query is, the following approach should work.  Simply wrap your current statement up as an inline view :

Select ILV.Date, ILV.Description, ILV.CodeID, C.DescriptionCode
from
(
    your current query goes here
)  ILV
inner join Codes C on C.CodeID = ILV.CodeID