Formula Error - Sumifs

Hello,

I'm trying to build out a SUMIFS formula that adds up timesheet data from a separate data sheet using 4 criteria:  employee name, project code, start date and end date.  The formula works fine if I don't have criteria for project code.  As soon as I add another criteria to match the client code, I get an #INCORRECT ARGUMENT SET error.

Here's the formula I wrote:

=SUMIFS({Timesheet Detail Hours}, {Timesheet Detail Client Code}, [Client Code]@row, {Timesheet Detail EE Number}, [Employee No]@row, {Timesheet Detail Date}, >=[Start Date]@row, {Timesheet Detail Date}, <=[End Date]@row)

The external Timesheet detail sheet being referenced is a flat data table.  The client code is a 12-character alphanumeric code consisting of ABC001.ABC01 format, except certain records (rows) have client codes in the external sheet formatted as ABC001.0

Any help or insights on what I may be doing wrong is greatly appreciated.