You cannot perform the actions you selected for this user. Possible reasons include: you entered an invalid email address, you do not have adequate permission, or you are not an administrator in all the accounts to which this user has access.

AI generated answer (using internal Slack threads):

Based on the conversations, the error message "You cannot perform the actions you selected for this user. Possible reasons include: you entered an invalid email address, you do not have adequate permission, or you are not an administrator in all the accounts to which this user has access." can occur due to several reasons: 1. The user you are trying to perform actions on has access to another account that you do not have access to. This is a common issue in consulting where different users have access to different accounts. 2. The user is also a contact under a master customer of your company. This might cause some conflicts in the system. 3. The user has access to the Sandbox. You might need to remove Sandbox access, perform the action, and then re-add the user to Sandbox. 4. The user's email address is not the same across all accounts where they have access. This can cause the system to think that you do not have admin access on all accounts. 5. There might be a workflow/script running that is locking the script. This can prevent certain actions from being performed on the user. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******