During my custimization course i get the invitation based on my requet but the hierarchy operation is deleted how i restore it
my hierarchy operator is deleted how i restor or how i get additional request to formulate other custimization
@Worku_Tadesse Thank you for your post and welcome to the DHIS2 Community of Practice! 
Would you please take a screenshot of what issue you are facing? In which course are you facing this issue? Additional links might be helpful!
Thank you!
update: @Worku_Tadesse, it seems that you are using the DHIS2 Fundamentals course and because the academy training support team needs your email to assist you, it’s best in this situation to write an email to fundamentals-support@dhis2.org Thanks! 