Links a user from your game to a user from your Login project via an external ID. You will not be able to link the same external ID to different users and update the external ID of a user if they already have it.
You can find an external ID in:
- a user JWT after successful authentication as a value of the
- a response of the method Get user details as a value of the
Data for linking users via an external ID.
User ID from your game. Used as an external ID by which users will be linked.
The Xsolla Login user ID. You can find it in Publisher Account > your Login project > Users > Username/ID.