Dash in the bibliography for a custom entry type/field

biblatex has everything built in to handle replacing name lists with dashes, but not literal fields. So we need to recreate what biblatex does for names for simple literal fields. A caveat of the straightforward solution shown here is that the dash check for literal fields does not interface with the dash check for name fields, so you won't get a dash if the author of a @book and the jurisdiction of a @register are the same.

The idea is to save the last jurisdiction with savefield and compare it in the next entry with iffieldequals.

documentclass{article}
usepackage[spanish]{babel}
usepackage[utf8]{inputenc}
begin{filecontents}{evidence.dbx}
DeclareDatamodelEntrytypes{register}
DeclareDatamodelFields[type=field,datatype=literal]{
  jurisdiction,
  volume,
  section,
  repository,
  repositorylocation,
}
DeclareDatamodelEntryfields[register]{
  jurisdiction,
  volume,
  section,
  repository,
  repositorylocation,
}
end{filecontents}
usepackage[datamodel=evidence,backend=biber,style=authortitle]{biblatex}

DeclareFieldFormat[register]{jurisdiction}{#1}
DeclareFieldFormat[register]{volume}{mkbibquote{#1}}
DeclareFieldFormat[register]{section}{#1}
DeclareFieldFormat[register]{repository}{#1}
DeclareFieldFormat[register]{repositorylocation}{#1}

makeatletter
InitializeBibliographyStyle{globalundefbbx@last@jurisdiction}

newbibmacro*{bbx:dashcheck:jurisdiction}[2]{%
  ifboolexpr{
    test {iffieldequals{jurisdiction}bbx@last@jurisdiction}
    and
    not test iffirstonpage
    and
    (
       not bool {bbx@inset}
       or
       test {iffieldequalstr{entrysetcount}{1}}
    )
  }
    {#1}
    {#2}}

newbibmacro*{bbx:save:jurisdiction}{%
  savefield{jurisdiction}{bbx@last@jurisdiction}}%

newbibmacro{jurisdiction}{%
  usebibmacro{bbx:dashcheck:jurisdiction}
    {bibnamedash}
    {usebibmacro{bbx:save:jurisdiction}%
     printfield{jurisdiction}}}
makeatother

DeclareBibliographyDriver{register}{%
  usebibmacro{bibindex}%
  usebibmacro{begentry}%
  usebibmacro{jurisdiction}%
  newunitnewblock
  printfield{volume}%
  newunitnewblock
  printfield{section}%
  newunitnewblock
  printfield{repository}%
  newunit
  printfield{repositorylocation}%   
  usebibmacro{finentry}}

begin{filecontents}{jobname.bib}
@register{refacteID312,
  jurisdiction       = {Biarritz, Pyrénées Atlantiques, France},
  volume             = {Etat Civil, Collection communale, Marriages (1843-1852)},
  section            = {Section 1845},
  repository         = {Archives Départementales des Pyrénées Atlantiques},
  repositorylocation = {Bayonne},  
}
@register{refacteID313,
  jurisdiction       = {Biarritz, Pyrénées Atlantiques, France},
  volume             = {Etat Civil, Collection communale, Marriages (1853-1862)},
  section            = {Section 1845},
  repository         = {Archives Départementales des Pyrénées Atlantiques},
  repositorylocation = {Bayonne},  
}
@book{negretoponymie1996,
  title     = {Toponymie générale de la {France}},
  volume    = {2},
  publisher = {Librairie Droz},
  author    = {Nègre, Ernest},
  year      = {1996},
}
end{filecontents}
addbibresource{jobname.bib}

begin{document}
nocite{*} 
printbibliography[title={Referencias}]
end{document}