If you reread everyone's opinion you will find the answer you are looking for.

And what is the error?

This looks like an add-on, perhaps SQL Prompt or something similar.
From your picture it is hard to know what is going on, but it looks like you could disable...

Wow, did you know that Raid 0 + 1 is done across at least 3 disks and has a parity bit?

Check this link: https://www.diffen.com/difference/RAID_0_vs_RAID_1

Changing the collation isn't needed.  What you need to change are your VARCHAR declared columns and parameters to NVARCHAR

You really don't need a table variable.  Try the following (sorry, but you didn't provide any DDL or sample data so I couldn't test the code before posting):
[code...

Also, if all you are doing is full and differential backups, you should not be using bulk logged or full recover model for the databases.

https://www.google.com/search?q=Difference+between+RAID+0+and+RAID+1%2B0

How are you mapping between tables and columns in database A and database B?  Are the table names the same?  Are the columns that need to be updated named the...

The real decision needs to be made by the business.  They are the ones that make the decision regarding how much data they are willing to lose in the event...