No. Generally when a requisition notice is issued, the notice and the requisition email will contain a URL to access the Requisition Portal.
However, if you receive an email without an URL, this means you will not be able to access the Requisition Portal for the specified requisition. You will instead, need to contact the issuing officer at the contact number or email address included on the requisition. In this instance, correspondence or evidence can be provided by email, post or in person at a Landgate office.