EDIT

1. Registration Stage changes will be triggered via the REST services, (see #7012) this will require the remote user to be granted with the CdmAuthoritiy (REGISTRATION.[UPDATE]{${uuid}}) or with REGISTRATION(${RegistrationStatusTypes}).[UPDATE]{${uuid}} whereas ${RegistrationStatusTypes is a comma separated list of status types (see also below)
2. Once a Registration has left the state PREPARATION a per entity permission for this registration must be revoked. Once the curator decides to give the Registration back to the submitter the state will change again to PREPARATION` and the submitter again needs to be able to add typeDesignations. This is rather complicated and could rather easily be achieved by extending the Registration authorities by an optional property which refers to the state of the Registration: REGISTRATION(${RegistrationStatusTypes}).[UPDATE]{${uuid}}, whereas ${RegistrationStatusTypes is a comma separated list of status types . The authoritiy is only applicable as long as the Registration is in the named status.

(both statements copied from #6655)