UPSC IES/ ISS Examination 2021. Union Public Service Commission (UPSC) given a notification to conduct Indian Economic Service (IES)/ Indian Statistical Service (ISS) Exam 2021. Exam: Indian Economic Service (IES)/ Indian Statistical Service (ISS) Exam 2021. Qualification: For IES: Candidates should possess Post-Graduate Degree in Economics/Applied Economics/ Business Economics/ Econometrics from a University. For IES: