Scenario
As a partner, when attempting to create an account for one of your customer's systems, you encounter an issue where the account cannot be created because your email is already associated with another account.
Solution
To resolve this issue and create an account for your customer, add a "+" symbol and other account-identifying text before the @ in your email address.
For example: Firstname.Lastname"+"reseller@adp.com
Proceed with the account creation using this modified email address. Emails will still be delivered to the correct email address, as everything starting at the "+" will be removed by the mail server.
KBA applicable for both Cloud and On-premise Organizations