How to revoke and delete User's competency via API

If you need to revoke a User's competency via API, you need to go to https://api.365.systems/ first.

1) Firstly, you need to get a User Login of the needed User by /odata/v2/Users method: 

2) Secondly, you need to get the Competency ID and the Level ID that you need to revoke from /odata/v2/UserCompetencies method:

3) And finally, using the data that you've got, you could fill in the method /odata/v2/Users('{LoginName}')/RevokeCompetency and press "Execute":

The competency of the User is now revoked.