### Must support

The meaning of the presence or absence of the must support flag is described in [Must support](guidance.html#must-support), with the following exception:

* Any values provided by publishing systems when adding or updating a healthcare service, practitioner or practitioner role will be ignored by the PCA service.  Bank account details must be managed by a healthcare provider organisation via the PCA Portal. The PCA service will populate the extension when providing healthcare service, practitioner or practitioner role resources to subscribing systems.
