Query::Insert_recordset() error 'There is mismatch between source and target fields for insert_Recordset'

Hi guys!

this is my first try to use the bulk insert from a Query result, Query::insert_recordset().

I made like the following example: 

https://axology.wordpress.com/2014/04/15/new-feature-in-ax-2012-r3-inserting-data-in-table-directly-from-query/

also I made sure every field from query is related to a field of the destination Tmp table by adding to the map

but it still throws an error ('There is mismatch between source and target fields for insert_Recordset.')

Would appreciate if someone can help.