Rest connection wtih HTTP protocol error 422 (Unprocessable Entity) error

[saharfate]

Hi all , 

I am trying to load the scrip with rest connection, I have a  WITH CONNECTION  containing a URL and 2 QUERY. 

my SQL has nested SELECTS. 

when I run the script I get the following error:

HTTP protocol error 422 (Unprocessable Entity): []

Can anyone help please?