The attached contains a Power Query query (aka Get & Transform Data) which is a table called MyDuplicates on the MyDuplicates sheet. The query looks at ALL the other tables in the workbook (excluding the one called MyDuplicates) so expects only to see tables with those consistent headers that you have.
It assumes all the columns have to be the same to call it a duplicate line.
The final column of that query table contains info on where the line is to be found.
If you add/change the tables or their contents you need to refresh the query by right-clicking the MyDuplicates table and choosing Refresh.
I've also used that table in formulae on sheets BZ-181, BZ-184 & BZ-186 in column I to show if that row is a duplicate.
In the second attachment (suffixed _v2) I've included the formula in the rightmost column of your tables (that way the formula is the same for all your tables). I've made no other changes and it still seems to work.