Hi @Marct,
That is true it will show that error if the tables are ordered different and also depending on the row length. It will work but you could use the alternative solution.
Alternative (a better solution):
I am attaching the better solution, which I mentioned ealier in this thread i.e, Inner Join of Datatables. This is not dependent on the length of rows, you will always get the correct output and the workflow is easy to read and no need to manipulate rows. Annotations are in the file as well.
JoinTables.xaml (7.8 KB)
Cheers!