See https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/488478/Bulk_Data_Transfer_-_additional_validation_valid_from_12_November_2015.pdf, section 3 A valid postcode. All users All users of the canvasser app Able to read and add canvassing data in a limited radius around their current position. Organisers of canvassing teams Able to see and modify data on the canvassers in the team(s) they organise; able to add canvassers to their team; able to update canvassers in their team, including resetting passwords and locking accounts; able to see canvass data over the whole area in which their team operates. People expert on particular issues. Able to read followup requests, and the electors to which they relate; able to access (read/write) the issues wiki; able to write followuop action records. Users entitled to see an overview of the canvassing data collected. Able to read canvassing data over the whole map, including historical data. Users responsible for determining what issues should be current at any time. Able to set current issues; able to add issues. Able to read and update canvasser records, team membership records, team organisership records, issue expertise records; able to add and update reference data generally.

Issues believed to be of interest to electors, about which they may have questions. Link table. Primary users of the system: those actually interviewing electors. But only their own record But only canvassers in their own team. All canvassers Requests for a followup with an issue expert Link table A role (essentially, the same as a group, but application layer rather than database layer) of which a user may be a member. Teams of canvassers who work together under common leadership. But only their own group(s) All groups Electoral districts Link table Actions taken on followup requests. But only for electors in their immediate vicinity Link table Options in the election or referendum being canvassed on Link table