I suggest that you work out how to do it outside of SSIS first. Have you already got that bit worked out?

Presumably you were trying to import from Excel? If you are just starting out with SSIS & want to 'get some runs on the board', I suggest that you start...

If it were me, I'd probably process the data from your vendor into a table which has been normalised and then use the normalised table as the basis for all...

Have a look at this. It assumes that RelatedLoans.SoldLoan cannot also exist in the MasterLoan column:

DECLARE @MasterLoanData TABLE
(
  NoteNumber VARCHAR(10)
, Balance INT
);

DECLARE @RelatedLoans...

Your UPDATE statement has a single target (r)

Yet your statement is attempting to update columns from m1 and m2.

As for the link that Phil gave - yes the Integration Services SERVICE is not required to run the packages - this is because from SQL 2012 SSIS catalog was...

You've been here long enough to know how to do this. 
Here is a formatted version, for all those who struggle to optimise embedded SQL:

DECLARE @PatientVisit_ID...

Sounds like you figured it out for yourself. You're not comparing like with...