Rhi @maja.effenberg thanks for your question, what role were you trying to set?.
https://zitadel.com/docs/apis/resources/mgmt/management-service-get-user-grant-by-id
can you try the above to see if you get any grant returned by the user
https://zitadel.com/docs/apis/resources/mgmt/management-service-get-user-grant-by-id
can you try the above to see if you get any grant returned by the user
RHi @maja.effenberg I'll look into this later today
RHi @maja.effenberg looking into this today
RCan you please share the curl request that you made and the response that you got?.
Is it a service user making the request?.
What all roles does that user has?.
Is it a service user making the request?.
What all roles does that user has?.
RHi @maja.effenberg one thing that I forgot to ask, the said user, is it a service user or a human user.
Rbecause I am trying to replicate this on my end.
Rthe reason I asked this is because you said
"When assigning roles to different users or getting their roles using these calls, everything works correctly. The issue only occurs for one specific user."
that made me question if other users are human users too or is it a mix of service/human users
"When assigning roles to different users or getting their roles using these calls, everything works correctly. The issue only occurs for one specific user."
that made me question if other users are human users too or is it a mix of service/human users
Rgiven that all of those grants could be set BY a service user
Rthanks for letting me know that, I will check with my team and will get back to you, this should not happen unless something has been missed
Ryes sure, this should have not happened, will update you Monday to see what I did. Thanks 
Rhey @maja.effenberg yes, I was testing it locally on my side, I also get the same error, I am looking more into it.
Rhey @maja.effenberg it works for me.
if it gives 409, that means you have to check in the console if the role exists in the Project, everything's in the screenshot. You have said earlier "one of the defined Roles from one of our projects." can you please cross check/verify if that's the case, make sure you are sending your ROLES KEY and NOT the Display Name.
In my case, role key is learner and display name is LEARNER.
if it gives 409, that means you have to check in the console if the role exists in the Project, everything's in the screenshot. You have said earlier "one of the defined Roles from one of our projects." can you please cross check/verify if that's the case, make sure you are sending your ROLES KEY and NOT the Display Name.
In my case, role key is learner and display name is LEARNER.
