There are two ways of identifying your client: the relation_key and the shared_provider_id.
The relation_key is the preferred one as it is a static parameter provided by TIDI and serves as the key identifier of your client on our API. You need to store it safely in your software to consistently identify this client.
However, some PSIs might face difficulties in storing the relation_key; for them, there is an alternative identifier that can be used in our API: the shared_provider_id. Nevertheless, if you can use the relation_key, we strongly recommend you to use it.
Choose below the parameter you want to obtain more information about: