@KyungHyun Choi
Thank you for your post!
- Based off the error message have you tried adding/assigning yourself (the signed in user) to the application?
- Do you have the "User assignment required" box checked within your Enterprise application? If this option is set to yes, then users must first be assigned to this application before being able to access it. If this option is set to no, then any users who navigate to the application deep-link URL or application URL directly will be granted access.
If none of the above workaround resolve your issue, can you please answer the questions below so I can gain a better understanding of your issue.
- How long have you been using this app before you started seeing this error message?
- Was anything changed from when it worked to now?
- How're you using this app? REST API, Graph API, etc.
- Can you provide any documentation that you followed to set this up?
Any additional information would be much appreciated!
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.