Abstract: Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for receiving, from a user, user data associated with one or more fields of a user profile associated with the user. The user profile includes a plurality of predefined fields. A request to create a requisition is received from a producer. The request includes requisition fields that include one or more of the plurality of predefined fields of the user profile. A request for the requisition is received via a smart link from the user. Requisition user data from the user profile corresponding to the requisition fields is determined. The requisition user data includes a portion of the received user data. The requisition and the requisition user data are sent to the user. An indication giving permission for the producer to access the requisition user data is received. The requisition user data is provided to the producer.