UNPROCESSABLE_ENTITY - sortOrder- is present in the input

UNPROCESSABLE_ENTITY - sortOrder- is present in the input

API Documentation - get tickets
How can I sort by CreatedTime with descending order?

when I use
params="sortBy=createdTime&sortOrder=desc&from1&limit=100"
I get 
Request not successful,Response code  422  
Response :  b'{"errorCode":"UNPROCESSABLE_ENTITY","message":"Extra query parameter \'sortOrder\' is present in the input."}\n'


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