When logging in from the buyer invitation, I get the message: The account is already registered with the specified buyer. Please use another account to complete registration or create a new account.

This message appears when your Ariba account is already linked to your buyer's Sourcing system through a prior invitation (sent through a specific supplier user profile), but the newly received invitation was assigned to a different supplier user profile inside the buyer's system.

In order to solve this issue, you have the following options:

1. Ask your buyer to assign the questionnaire or tender invitation to the correct supplier user profile, which will show status public in the buyer's system.
2. In case your buyer does not assign the event or questionnaire to the already linked supplier user profile, you will need to create a new account via the invitation link sent by your buyer. To create a new account, please follow the steps described in the article: How do I create a new account to access my Buyer's event?
3. If your account is linked to the wrong supplier user profile, the buyer might need to unlink your account from the wrong supplier user id to allow you to connect via the new invitation instead.

Once the steps above are complete, you will be able to enter the account to access the desired questionnaire or event.

Your customer can review this article to reassign the questionnaire or event to their existing user:

Error: "Account already registered with the given buyer. Use another account to complete registration or create a new account"

The customer can also refer to the following article explaining how to unlink your user ID from a specific supplier user profile inside their system:

How do I unlink a supplier's User and Supplier Organization ANID?

Guided Sourcing
Strategic Contracts
Strategic Sourcing > Sourcing Events > Sourcing Event Registration/Login
Supplier Lifecycle & Performance > Supplier Lifecycle & Performance Registration