From 071353342343339f04fce061a295967e1f8a7a54 Mon Sep 17 00:00:00 2001
From: Osma Suominen <osma.suominen@helsinki.fi>
Date: Thu, 5 Oct 2023 14:53:00 +0300
Subject: [PATCH] Remove identifierSpace and schemaSpace; make view templates
 mandatory (#139)

---
 .../manifest/invalid/bad-authentication.json  |  5 ++-
 .../manifest/invalid/feature-view.json        |  5 ++-
 ...fierSpace.json => godot-missing-view.json} |  3 --
 .../manifest/invalid/missing-version.json     |  5 ++-
 .../manifest/invalid/old-version.json         |  5 ++-
 .../manifest/invalid/opencorporates.json      |  2 -
 .../invalid/ror-invalid-view-pattern.json     |  2 -
 .../slub-invalid-property-setting.json        |  2 -
 .../manifest/valid/authentication.json        |  2 -
 .../manifest/valid/codefork-viaf.json         |  2 -
 .../examples/manifest/valid/example-min.json  |  5 ++-
 .../examples/manifest/valid/feature-view.json |  5 ++-
 .../manifest/valid/findthatcharity.json       |  2 -
 draft/examples/manifest/valid/fundref.json    |  5 ++-
 .../manifest/valid/geocollider-sinatra.json   |  2 -
 draft/examples/manifest/valid/getty.json      |  2 -
 draft/examples/manifest/valid/kerameikos.json |  2 -
 draft/examples/manifest/valid/kew.json        |  2 -
 draft/examples/manifest/valid/lobid-gnd.json  |  2 -
 draft/examples/manifest/valid/nomisma.json    |  2 -
 draft/examples/manifest/valid/occrp.json      |  2 -
 .../manifest/valid/ordnance-survey.json       |  2 -
 .../examples/manifest/valid/vivo-cornell.json |  4 +-
 draft/examples/manifest/valid/wikidata.json   |  4 +-
 draft/index.html                              | 40 ++++---------------
 draft/schemas/manifest.json                   | 11 +----
 26 files changed, 31 insertions(+), 94 deletions(-)
 rename draft/examples/manifest/invalid/{godot-missing-identifierSpace.json => godot-missing-view.json} (82%)

diff --git a/draft/examples/manifest/invalid/bad-authentication.json b/draft/examples/manifest/invalid/bad-authentication.json
index b1bc1d0..bc56792 100644
--- a/draft/examples/manifest/invalid/bad-authentication.json
+++ b/draft/examples/manifest/invalid/bad-authentication.json
@@ -1,7 +1,8 @@
 {
   "name": "OpenCorporates Reconciliation Service",
-  "identifierSpace": "http://rdf.freebase.com/ns/type.object.id",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
+  "view": {
+    "url": "{+id}"
+  },
   "authentication": {
      "foo": "bar"
   }
diff --git a/draft/examples/manifest/invalid/feature-view.json b/draft/examples/manifest/invalid/feature-view.json
index 398d1a9..7166c6e 100644
--- a/draft/examples/manifest/invalid/feature-view.json
+++ b/draft/examples/manifest/invalid/feature-view.json
@@ -1,7 +1,8 @@
 {
     "name": "VIAF",
-    "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
-    "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD",
+    "view": {
+        "url": "https://viaf.org/viaf/{id}"
+    },
     "feature_view": {
         "url": "https://vocab.getty.edu/recon/features/"
     }
diff --git a/draft/examples/manifest/invalid/godot-missing-identifierSpace.json b/draft/examples/manifest/invalid/godot-missing-view.json
similarity index 82%
rename from draft/examples/manifest/invalid/godot-missing-identifierSpace.json
rename to draft/examples/manifest/invalid/godot-missing-view.json
index ec2b2df..74b5c7c 100644
--- a/draft/examples/manifest/invalid/godot-missing-identifierSpace.json
+++ b/draft/examples/manifest/invalid/godot-missing-view.json
@@ -8,8 +8,5 @@
   "name": "GODOT (Graph of Dated Objects and Texts) Reconciliation Service - Roman Consulates",
   "preview": {
     "url": "https://godot.date/reconcile/preview={id}"
-  },
-  "view": {
-    "url": "https://godot.date/id/{id}"
   }
 }
diff --git a/draft/examples/manifest/invalid/missing-version.json b/draft/examples/manifest/invalid/missing-version.json
index 7003db6..950dec7 100644
--- a/draft/examples/manifest/invalid/missing-version.json
+++ b/draft/examples/manifest/invalid/missing-version.json
@@ -1,5 +1,6 @@
 {
     "name": "VIAF",
-    "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
-    "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD"
+    "view": {
+        "url": "https://viaf.org/viaf/{id}"
+    }
 }
diff --git a/draft/examples/manifest/invalid/old-version.json b/draft/examples/manifest/invalid/old-version.json
index 6ecd7bc..3d04858 100644
--- a/draft/examples/manifest/invalid/old-version.json
+++ b/draft/examples/manifest/invalid/old-version.json
@@ -1,6 +1,7 @@
 {
     "versions": ["0.1"],
     "name": "VIAF",
-    "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
-    "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD"
+    "view": {
+        "url": "https://viaf.org/viaf/{id}"
+    }
 }
diff --git a/draft/examples/manifest/invalid/opencorporates.json b/draft/examples/manifest/invalid/opencorporates.json
index 14c5c6e..06a9946 100644
--- a/draft/examples/manifest/invalid/opencorporates.json
+++ b/draft/examples/manifest/invalid/opencorporates.json
@@ -1,7 +1,5 @@
 {
   "name": "OpenCorporates Reconciliation Service",
-  "identifierSpace": "http://rdf.freebase.com/ns/type.object.id",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
   "view": {
     "url": "https://opencorporates.com{id}"
   },
diff --git a/draft/examples/manifest/invalid/ror-invalid-view-pattern.json b/draft/examples/manifest/invalid/ror-invalid-view-pattern.json
index d1a3d54..1d75cb7 100644
--- a/draft/examples/manifest/invalid/ror-invalid-view-pattern.json
+++ b/draft/examples/manifest/invalid/ror-invalid-view-pattern.json
@@ -1,7 +1,5 @@
 {
   "name": "ROR Reconciliation Service",
-  "identifierSpace": "http://ror.org/organization",
-  "schemaSpace": "http://ror.org/ns/type.object.id",
   "defaultTypes": [
     {
       "id": "/ror/organization",
diff --git a/draft/examples/manifest/invalid/slub-invalid-property-setting.json b/draft/examples/manifest/invalid/slub-invalid-property-setting.json
index 019456d..23d1648 100644
--- a/draft/examples/manifest/invalid/slub-invalid-property-setting.json
+++ b/draft/examples/manifest/invalid/slub-invalid-property-setting.json
@@ -59,14 +59,12 @@
       "service_url": "http://data.slub-dresden.de"
     }
   },
-  "identifierSpace": "http://data.slub-dresden.de",
   "name": "SLUB LOD reconciliation for OpenRefine",
   "preview": {
     "height": 100,
     "url": "http://data.slub-dresden.de/{id}.preview",
     "width": 320
   },
-  "schemaSpace": "http://schema.org",
   "view": {
     "url": "http://data.slub-dresden.de/{id}"
   }
diff --git a/draft/examples/manifest/valid/authentication.json b/draft/examples/manifest/valid/authentication.json
index 1cf5a86..a7c7f4d 100644
--- a/draft/examples/manifest/valid/authentication.json
+++ b/draft/examples/manifest/valid/authentication.json
@@ -3,9 +3,7 @@
   "view": {
     "url": "http://vivo.med.cornell.edu/individual?uri={id}"
   },
-  "identifierSpace": "http://vivo.med.cornell.edu/individual/",
   "name": "VIVO Reconciliation Service",
-  "schemaSpace": "http://vivo.med.cornell.edu/individual/",
   "authentication": {
     "type": "apiKey",
     "description": "Vivo API key",
diff --git a/draft/examples/manifest/valid/codefork-viaf.json b/draft/examples/manifest/valid/codefork-viaf.json
index b3e13a5..60cc6d8 100644
--- a/draft/examples/manifest/valid/codefork-viaf.json
+++ b/draft/examples/manifest/valid/codefork-viaf.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "VIAF",
-  "identifierSpace": "http://rdf.freebase.com/ns/user/hangy/viaf",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
   "view": {
     "url": "http://viaf.org/viaf/{id}"
   },
diff --git a/draft/examples/manifest/valid/example-min.json b/draft/examples/manifest/valid/example-min.json
index 662b053..0c123c1 100644
--- a/draft/examples/manifest/valid/example-min.json
+++ b/draft/examples/manifest/valid/example-min.json
@@ -1,6 +1,7 @@
 {
     "versions": ["0.2"],
     "name": "VIAF",
-    "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
-    "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD"
+    "view": {
+        "url": "https://viaf.org/viaf/{id}"
+    }
 }
diff --git a/draft/examples/manifest/valid/feature-view.json b/draft/examples/manifest/valid/feature-view.json
index 484c838..fa43b45 100644
--- a/draft/examples/manifest/valid/feature-view.json
+++ b/draft/examples/manifest/valid/feature-view.json
@@ -1,8 +1,9 @@
 {
     "versions": ["0.2"],
     "name": "VIAF",
-    "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
-    "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD",
+    "view": {
+        "url": "https://viaf.org/viaf/{id}"
+    },
     "feature_view": {
         "url": "https://vocab.getty.edu/recon/features/{id}"
     }
diff --git a/draft/examples/manifest/valid/findthatcharity.json b/draft/examples/manifest/valid/findthatcharity.json
index f3682e0..cdfdaaa 100644
--- a/draft/examples/manifest/valid/findthatcharity.json
+++ b/draft/examples/manifest/valid/findthatcharity.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "findthatcharity",
-  "identifierSpace": "http://rdf.freebase.com/ns/type.object.id",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
   "view": {
     "url": "https://findthatcharity.uk/charity/{id}"
   },
diff --git a/draft/examples/manifest/valid/fundref.json b/draft/examples/manifest/valid/fundref.json
index 2f23a31..b301d38 100644
--- a/draft/examples/manifest/valid/fundref.json
+++ b/draft/examples/manifest/valid/fundref.json
@@ -1,8 +1,9 @@
 {
   "versions": ["0.2"],
   "name": "Open Funder Registry Reconciliation Service",
-  "identifierSpace": "http://openfunder.crossref.org/openfunder",
-  "schemaSpace": "http://openfunder.crossref.org/ns/type.object.id",
+  "view": {
+    "url": "{+id}"
+  },
   "defaultTypes": [
     {
       "id": "/fundref/funder_name",
diff --git a/draft/examples/manifest/valid/geocollider-sinatra.json b/draft/examples/manifest/valid/geocollider-sinatra.json
index ae6df0b..67ba9ca 100644
--- a/draft/examples/manifest/valid/geocollider-sinatra.json
+++ b/draft/examples/manifest/valid/geocollider-sinatra.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "Pleiades Reconciliation for OpenRefine",
-  "schemaSpace": "https://pleiades.stoa.org/places/",
-  "identifierSpace": "https://pleiades.stoa.org/places/vocab#",
   "view": {
     "url": "{+id}"
   },
diff --git a/draft/examples/manifest/valid/getty.json b/draft/examples/manifest/valid/getty.json
index 54ebb47..ad33716 100644
--- a/draft/examples/manifest/valid/getty.json
+++ b/draft/examples/manifest/valid/getty.json
@@ -18,14 +18,12 @@
       "name": "Search all Vocabs"
     }
   ],
-  "identifierSpace": "http://vocab.getty.edu/doc/#GVP_URLs_and_Prefixes",
   "name": "Getty Vocabularies Reconciliation Service",
   "batchSize": 50,
   "preview": {
     "height": 200,
     "width": 350
   },
-  "schemaSpace": "http://vocab.getty.edu/doc/#The_Getty_Vocabularies_and_LOD",
   "suggest": {
     "entity": false,
     "property": true,
diff --git a/draft/examples/manifest/valid/kerameikos.json b/draft/examples/manifest/valid/kerameikos.json
index 76f1591..70dfcb7 100644
--- a/draft/examples/manifest/valid/kerameikos.json
+++ b/draft/examples/manifest/valid/kerameikos.json
@@ -4,8 +4,6 @@
   "view": {
     "url": "http://kerameikos.org/id/{id}"
   },
-  "identifierSpace": "http://kerameikos.org/id/",
-  "schemaSpace": "http://kerameikos.org/ontology",
   "defaultTypes": [
     {
       "id": "skos:Concept",
diff --git a/draft/examples/manifest/valid/kew.json b/draft/examples/manifest/valid/kew.json
index 1170e6d..2f964ad 100644
--- a/draft/examples/manifest/valid/kew.json
+++ b/draft/examples/manifest/valid/kew.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "IPNI Name Reconciliation Service",
-  "identifierSpace": "http://ipni.org/urn:lsid:ipni.org:names:",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
   "view": {
     "url": "http://ipni.org/urn:lsid:ipni.org:names:{id}"
   },
diff --git a/draft/examples/manifest/valid/lobid-gnd.json b/draft/examples/manifest/valid/lobid-gnd.json
index efc739f..82154f5 100644
--- a/draft/examples/manifest/valid/lobid-gnd.json
+++ b/draft/examples/manifest/valid/lobid-gnd.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "GND reconciliation for OpenRefine",
-  "identifierSpace": "https://lobid.org/gnd/",
-  "schemaSpace": "https://d-nb.info/standards/elementset/gnd#AuthorityResource",
   "defaultTypes": [
     {
       "id": "AuthorityResource",
diff --git a/draft/examples/manifest/valid/nomisma.json b/draft/examples/manifest/valid/nomisma.json
index 8c3f362..2b76eda 100644
--- a/draft/examples/manifest/valid/nomisma.json
+++ b/draft/examples/manifest/valid/nomisma.json
@@ -4,8 +4,6 @@
   "view": {
     "url": "http://nomisma.org/id/{id}"
   },
-  "identifierSpace": "http://nomisma.org/id/",
-  "schemaSpace": "http://nomisma.org/ontology",
   "defaultTypes": [
     {
       "id": "nmo:CoinWear",
diff --git a/draft/examples/manifest/valid/occrp.json b/draft/examples/manifest/valid/occrp.json
index 611774d..23f02e8 100644
--- a/draft/examples/manifest/valid/occrp.json
+++ b/draft/examples/manifest/valid/occrp.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "OCCRP Aleph",
-  "identifierSpace": "http://rdf.freebase.com/ns/type.object.id",
-  "schemaSpace": "http://rdf.freebase.com/ns/type.object.id",
   "view": {
     "url": "https://aleph.occrp.org/entities/{id}"
   },
diff --git a/draft/examples/manifest/valid/ordnance-survey.json b/draft/examples/manifest/valid/ordnance-survey.json
index 966ffaa..948d7ad 100644
--- a/draft/examples/manifest/valid/ordnance-survey.json
+++ b/draft/examples/manifest/valid/ordnance-survey.json
@@ -1,8 +1,6 @@
 {
   "versions": ["0.2"],
   "name": "Code-Point Open Reconciliation API",
-  "identifierSpace": "http://data.ordnancesurvey.co.uk/id/data/code-point-open",
-  "schemaSpace": "http://data.ordnancesurvey.co.uk/id/data/code-point-open",
   "view": {
     "url": "{+id}"
   }
diff --git a/draft/examples/manifest/valid/vivo-cornell.json b/draft/examples/manifest/valid/vivo-cornell.json
index e7c8298..913354e 100644
--- a/draft/examples/manifest/valid/vivo-cornell.json
+++ b/draft/examples/manifest/valid/vivo-cornell.json
@@ -3,7 +3,6 @@
   "view": {
     "url": "http://vivo.med.cornell.edu/individual?uri={id}"
   },
-  "identifierSpace": "http://vivo.med.cornell.edu/individual/",
   "name": "VIVO Reconciliation Service",
   "defaultTypes": [
     {
@@ -34,6 +33,5 @@
       "name": "obo:IAO_0000030",
       "id": "http://purl.obolibrary.org/obo/IAO_0000030"
     }
-  ],
-  "schemaSpace": "http://vivo.med.cornell.edu/individual/"
+  ]
 }
diff --git a/draft/examples/manifest/valid/wikidata.json b/draft/examples/manifest/valid/wikidata.json
index 3ef3f9d..536c05b 100644
--- a/draft/examples/manifest/valid/wikidata.json
+++ b/draft/examples/manifest/valid/wikidata.json
@@ -5,7 +5,6 @@
     "width": 400,
     "height": 100
   },
-  "schemaSpace": "http://www.wikidata.org/prop/direct/",
   "documentation": "https://tools.wmflabs.org/openrefine-wikidata/",
   "logo": "https://tools.wmflabs.org/openrefine-wikidata/logo.png",
   "serviceVersion": "1.2.3",
@@ -83,6 +82,5 @@
     "type": true,
     "entity": true,
     "property": true
-  },
-  "identifierSpace": "http://www.wikidata.org/entity/"
+  }
 }
diff --git a/draft/index.html b/draft/index.html
index fbdba57..b5644d2 100644
--- a/draft/index.html
+++ b/draft/index.html
@@ -222,7 +222,8 @@ <h4>This Draft</h4>
           <ul>
             <li>Remove support for flyouts;</li>
             <li>The endpoints of various sub-services are no longer configurable, but determined by the root reconciliation endpoint;</li>
-            <li>The reconciliation queries only support passing a single <code>type</code> and the <code>type_strict</code> parameter was removed.</li>
+            <li>The reconciliation queries only support passing a single <code>type</code> and the <code>type_strict</code> parameter was removed;</li>
+            <li>Remove the notion of identifierSpace and schemaSpace and make view templates mandatory.
           </ul>
         </section>
       </section>
@@ -255,7 +256,7 @@ <h3 data-link-for="entities">Entities</h3>
            Moreover, for each <a>property</a> it contains a set of associated <a>property values</a>, possibly empty.
         </p>
         <p>
-           Reconciliation services can define in their <a>service manifest</a> a <dfn>URI template</dfn> for entities,
+           Reconciliation services MUST define in their <a>service manifest</a> a <dfn>URI template</dfn> for entities,
            as defined by [[RFC6570]]. This URI template builds a view URI for each entity, and has <code>id</code> as only variable.
            For each entity, expanding the template with <code>id</code> being set to the entity's identifier
            MUST result in a valid URI.
@@ -314,29 +315,6 @@ <h3 data-link-for="property values">Property Values</h3>
           </ul>
         </p>
       </section>
-      <section>
-        <h3 data-link-for="spaces">Identifier and Schema Spaces</h3>
-        <p>
-          A reconciliation service MUST define two URIs, exposed in its <a>service manifest</a>:
-          <dl>
-            <dt><dfn>identifier space</dfn></dt>
-            <dd>The URI namespace (i.e. prefix) for the identifiers of an <a>entity</a> returned by the reconciliation service, for example <code>http://www.wikidata.org/entity/</code> or <code>https://d-nb.info/gnd/</code>. This URI MAY resolve to a page describing these entities and their identifiers;</dd>
-            <dt><dfn>schema space</dfn></dt>
-            <dd>A URI which identifies the type of an <a>entity</a> returned by the reconciliation service, for example <code>http://www.w3.org/2004/02/skos/core#Concept</code> or <code>https://schema.org/Thing</code>. This URI MAY resolve to a page describing this type.</dd>
-          </dl>
-        </p>
-        <p>
-          If two different reconciliation services expose the same entities and properties, then
-          they SHOULD use the same identifier and schema space URIs, signalling that
-          (for instance) the Data Extension service of the first one can be used on reconciliation candidates by the second one.
-        </p>
-        <p class="note">
-          The notions of identifier and schema space
-          have been inherited from the API's original purpose, when it was specific
-          to Freebase. Their original meaning was to be understood within Freebase's
-          own data model.
-        </p>
-      </section>
     </section>
     <section>
       <h2>Service Definition</h2>
@@ -362,10 +340,6 @@ <h3>Service Manifest</h3>
           <dt><code>name</code></dt>
           <dd>A human-readable name for the service, generally the name of the database it exposes. In the case where multiple reconciliation services exist for the same database, it is in the interest of a service to bear a meaningful name which
 will help disambiguating it from others;</dd>
-          <dt><code>identifierSpace</code></dt>
-          <dd>The <a>identifier space</a> used by the service, as a URI;</dd>
-          <dt><code>schemaSpace</code></dt>
-          <dd>The <a>schema space</a> used by the service, as a URI;</dd>
           <dt><code>defaultTypes</code></dt>
           <dd>An array of <a>types</a> which are considered sensible default choices as types supplied in reconciliation queries. For services which do not rely on types, this MAY contain a single type with a generic name making it clear that all entities in the
 database are instances of this type.<dd>
@@ -376,7 +350,7 @@ <h3>Service Manifest</h3>
           <dt><code>serviceVersion</code></dt>
           <dd>An optional string which describes the version of the software exposing this service. This is not to be confused with <code>versions</code> which is about the versions of the reconciliation API supported by the service;</dd>
           <dt><code>view</code></dt>
-          <dd>An optional object which contains a single field <code>url</code>. Its value is a <a>URI template</a> for <a>entities</a>;</dd>
+          <dd>An object which contains a single field <code>url</code>. Its value is a <a>URI template</a> for <a>entities</a>;</dd>
           <dt><code>feature_view</code></dt>
           <dd>An optional object which contains a single field <code>url</code>. Its value is a <a>URI template</a> for <a>matching features</a>;</dd>
           <dt><code>preview</code></dt>
@@ -906,9 +880,9 @@ <h3>Data Extension Responses</h3>
           The <dfn id="data+extension+response+rows">rows</dfn> object contains, for each <a>entity</a> identifier in the
           <a>data extension query</a>, for each <a>property</a> identifier in the
           <a href="#data+extension+response+metadata">metadata</a>, the <a>property values</a> of that property in that entity.
-          If the property values are <a>entities</a>, their identifiers are expected to be in the service's <a>identifier space</a>.
-          If that is not the case, the service MUST specify in the <code>meta</code> section the endpoint of another reconciliation service whose <a>identifier space</a>
-          contains the returned entities. This endpoint is specified on a column-per-column basis.
+          If the property values are <a>entities</a>, their identifiers are expected to be valid entities for the service at hand.
+          If that is not the case, the service MUST specify in the <code>meta</code> section the endpoint of another reconciliation service for which the entity identifiers are valid, i.e., inserting them into the entity view template of that other service yields valid URIs.
+          This endpoint is specified on a column-per-column basis.
         </p>
         <p>
           Response example for the <a>data extension query</a> from the previous example:
diff --git a/draft/schemas/manifest.json b/draft/schemas/manifest.json
index c720ad8..934410a 100644
--- a/draft/schemas/manifest.json
+++ b/draft/schemas/manifest.json
@@ -18,14 +18,6 @@
       "type": "string",
       "description": "A human-readable name for the service or data source"
     },
-    "identifierSpace": {
-      "type": "string",
-      "description": "A URI describing the entity identifiers used in this service"
-    },
-    "schemaSpace": {
-      "type": "string",
-      "description": "A URI describing the schema used in this service"
-    },
     "documentation": {
       "type": "string",
       "description": "A URI which hosts documentation about this service"
@@ -267,7 +259,6 @@
   "required": [
     "versions",
     "name",
-    "identifierSpace",
-    "schemaSpace"
+    "view"
   ]
 }