When initiating Account Information Service (AIS) or Payment Initiation Service (PIS) flows, include the partner configuration id as part of the request in the X-Custom-Property-Partner-Id header. It is only required to send this parameter when initiating the consent or a payment, not for every request. The information should be included in the header, not the body of the request. This ensures that the integration is correctly associated with the relevant partner. If this configuration_id is not present the flow will fallback to the redirect flow as long as that one is live. For backwards compatibility it is still possible to send partner id in the PSU-ID-Type header. But it is strongly not recommended. Any value provided in PSU-ID header will be ignored.
Should we include the configuration id (and PSU-ID header) in the headers of the following requests: POST /consents and POST /payments/sepa-credit-transfer OR should we add it to the body of the request?
