diff --git a/blazar/api/context.py b/blazar/api/context.py
index 9b2ea0df..e8fb5ae5 100644
--- a/blazar/api/context.py
+++ b/blazar/api/context.py
@@ -27,18 +27,5 @@ def ctx_from_headers(headers):
     except TypeError:
         raise exceptions.WrongFormat()
 
-    kwargs = {"user_id": headers['X-User-Id'],
-              "project_id": headers['X-Project-Id'],
-              "auth_token": headers['X-Auth-Token'],
-              "service_catalog": service_catalog,
-              "user_name": headers['X-User-Name'],
-              "project_name": headers['X-Project-Name'],
-              "roles": list(
-                  map(str.strip, headers['X-Roles'].split(',')))}
-
-    # For v1 only, request_id and global_request_id will be available.
-    if headers.environ['PATH_INFO'].startswith('/v1'):
-        kwargs['request_id'] = headers.environ['openstack.request_id']
-        kwargs['global_request_id'] = headers.environ.get(
-            'openstack.global_request_id')
-    return context.BlazarContext(**kwargs)
+    return context.BlazarContext.from_environ(headers.environ,
+                                              service_catalog=service_catalog)
diff --git a/blazar/context.py b/blazar/context.py
index 524ec6e5..80424b3c 100644
--- a/blazar/context.py
+++ b/blazar/context.py
@@ -15,31 +15,29 @@
 
 import threading
 
+from oslo_config import cfg
 from oslo_context import context
 
+CONF = cfg.CONF
+
 
 class BlazarContext(context.RequestContext):
 
+    # service_catalog is not by default read from a dict
+    # when deserializing a context.
+    FROM_DICT_EXTRA_KEYS = ['service_catalog']
+
     _context_stack = threading.local()
 
-    def __init__(self, user_id=None, project_id=None, project_name=None,
-                 service_catalog=None, user_name=None, **kwargs):
+    def __init__(self, service_catalog=None, **kwargs):
         # NOTE(neha-alhat): During serializing/deserializing context object
         # over the RPC layer, below extra parameters which are passed by
         # `oslo.messaging` are popped as these parameters are not required.
         kwargs.pop('client_timeout', None)
         kwargs.pop('user_identity', None)
-        kwargs.pop('project', None)
-
-        if user_id:
-            kwargs['user_id'] = user_id
-        if project_id:
-            kwargs['project_id'] = project_id
 
         super(BlazarContext, self).__init__(**kwargs)
 
-        self.project_name = project_name
-        self.user_name = user_name
         self.service_catalog = service_catalog or []
 
         if self.is_admin and 'admin' not in self.roles:
@@ -65,28 +63,35 @@ class BlazarContext(context.RequestContext):
         except (AttributeError, IndexError):
             raise RuntimeError("Context isn't available here")
 
-    # NOTE(yorik-sar): as long as oslo.rpc requires this
     def to_dict(self):
         result = super(BlazarContext, self).to_dict()
-        result['user_id'] = self.user_id
-        result['user_name'] = self.user_name
-        result['project_id'] = self.project_id
-        result['project_name'] = self.project_name
         result['service_catalog'] = self.service_catalog
         return result
 
     @classmethod
-    def elevated(cls):
+    def admin(cls):
         try:
-            ctx = cls.current()
+            cur = cls.current()
+            request_id = cur.request_id
+            global_request_id = cur.global_request_id
+            service_catalog = cur.service_catalog
         except RuntimeError:
-            ctx = None
-        return cls(ctx, is_admin=True)
+            request_id = global_request_id = service_catalog = None
+        return cls(
+            user_name=CONF.os_admin_username,
+            user_domain_name=CONF.os_admin_user_domain_name,
+            project_name=CONF.os_admin_project_name,
+            project_domain_name=CONF.os_admin_project_domain_name,
+            is_admin=True,
+            service_catalog=service_catalog,
+            request_id=request_id,
+            global_request_id=global_request_id
+        )
 
 
 def current():
     return BlazarContext.current()
 
 
-def elevated():
-    return BlazarContext.elevated()
+def admin():
+    return BlazarContext.admin()
diff --git a/blazar/policy.py b/blazar/policy.py
index 5714cc0d..a4e2f0c5 100644
--- a/blazar/policy.py
+++ b/blazar/policy.py
@@ -91,7 +91,7 @@ def enforce(context, action, target, do_raise=True):
 
     init()
 
-    credentials = context.to_dict()
+    credentials = context.to_policy_values()
 
     # Add the exceptions arguments if asked to do a raise
     extra = {}
diff --git a/blazar/tests/api/__init__.py b/blazar/tests/api/__init__.py
index 18d5325a..4e3e537f 100644
--- a/blazar/tests/api/__init__.py
+++ b/blazar/tests/api/__init__.py
@@ -27,6 +27,9 @@ from blazar import tests
 
 PATH_PREFIX = '/v2'
 
+FAKE_PROJECT = '981b767265174c108bc5a61185b748ac'
+FAKE_USER = 'b4fdb2fff13545ceb751295096cc18ee'
+
 
 class APITest(tests.TestCase):
     """Used for unittests tests of Pecan controllers."""
@@ -40,11 +43,12 @@ class APITest(tests.TestCase):
         def fake_ctx_from_headers(headers):
             if not headers:
                 return context.BlazarContext(
-                    user_id='fake', project_id='fake', roles=['member'])
+                    user_id=FAKE_USER, project_id=FAKE_PROJECT,
+                    roles=['member'])
             roles = headers.get('X-Roles', str('member')).split(',')
             return context.BlazarContext(
-                user_id=headers.get('X-User-Id', 'fake'),
-                project_id=headers.get('X-Project-Id', 'fake'),
+                user_id=headers.get('X-User-Id', FAKE_USER),
+                project_id=headers.get('X-Project-Id', FAKE_PROJECT),
                 auth_token=headers.get('X-Auth-Token', None),
                 service_catalog=None,
                 user_name=headers.get('X-User-Name', 'fake'),
diff --git a/blazar/tests/api/test_context.py b/blazar/tests/api/test_context.py
index c2c02046..4206c670 100644
--- a/blazar/tests/api/test_context.py
+++ b/blazar/tests/api/test_context.py
@@ -19,7 +19,6 @@ import webob
 from werkzeug import wrappers
 
 from blazar.api import context as api_context
-from blazar import context
 from blazar import exceptions
 from blazar import tests
 
@@ -33,9 +32,10 @@ class ContextTestCase(tests.TestCase):
                              'X-Project-Id': uuidsentinel.project_id,
                              'X-Auth-Token': '111-111-111',
                              'X-User-Name': 'user_name',
+                             'X-User-Domain-Name': 'user_domain_name',
                              'X-Project-Name': 'project_name',
+                             'X-Project-Domain-Name': 'project_domain_name',
                              'X-Roles': 'user_name0, user_name1'}
-        self.context = self.patch(context, 'BlazarContext')
         self.catalog = jsonutils.dump_as_bytes({'nova': 'catalog'})
 
     def test_ctx_from_headers_no_catalog(self):
@@ -64,19 +64,24 @@ class ContextTestCaseV1(ContextTestCase):
             '/v1/leases',
             headers=self.fake_headers,
             environ_base=environ_base)
-        api_context.ctx_from_headers(req.headers)
-
-        self.context.assert_called_once_with(
+        context = api_context.ctx_from_headers(req.headers)
+        expected = dict(
             user_id=uuidsentinel.user_id,
             roles=['user_name0',
                    'user_name1'],
             project_name='project_name',
+            project_domain_name='project_domain_name',
             auth_token='111-111-111',
             service_catalog={'nova': 'catalog'},
             project_id=uuidsentinel.project_id,
             user_name='user_name',
+            user_domain_name='user_domain_name',
             request_id='req-' + uuidsentinel.reqid,
-            global_request_id='req-' + uuidsentinel.globalreqid)
+            global_request_id='req-' + uuidsentinel.globalreqid
+        )
+
+        for k, v in expected.items():
+            self.assertEqual(getattr(context, k, None), v)
 
 
 class ContextTestCaseV2(ContextTestCase):
@@ -85,14 +90,19 @@ class ContextTestCaseV2(ContextTestCase):
         self.fake_headers['X-Service-Catalog'] = self.catalog
         req = webob.Request.blank('/v2/leases')
         req.headers = self.fake_headers
-        api_context.ctx_from_headers(req.headers)
-
-        self.context.assert_called_once_with(
+        context = api_context.ctx_from_headers(req.headers)
+        expected = dict(
             user_id=uuidsentinel.user_id,
             roles=['user_name0',
                    'user_name1'],
             project_name='project_name',
+            project_domain_name='project_domain_name',
             auth_token='111-111-111',
             service_catalog={'nova': 'catalog'},
             project_id=uuidsentinel.project_id,
-            user_name='user_name')
+            user_name='user_name',
+            user_domain_name='user_domain_name'
+        )
+
+        for k, v in expected.items():
+            self.assertEqual(getattr(context, k, None), v)
diff --git a/blazar/tests/api/v2/test_leases.py b/blazar/tests/api/v2/test_leases.py
index 1bfac7c5..c93991eb 100644
--- a/blazar/tests/api/v2/test_leases.py
+++ b/blazar/tests/api/v2/test_leases.py
@@ -28,9 +28,8 @@ def fake_lease(**kw):
         'end_date': kw.get('end_date', '2014-02-01 13:37'),
         'trust_id': kw.get('trust_id',
                            '35b17138b3644e6aa1318f3099c5be68'),
-        'user_id': kw.get('user_id', 'efd8780712d24b389c705f5c2ac427ff'),
-        'project_id': kw.get('project_id',
-                             'bd9431c18d694ad3803a8d4a6b89fd36'),
+        'user_id': kw.get('user_id', api.FAKE_USER),
+        'project_id': kw.get('project_id', api.FAKE_PROJECT),
         'reservations': kw.get('reservations', [
             {
                 'resource_id': '1234',
diff --git a/blazar/tests/test_context.py b/blazar/tests/test_context.py
index edaf68ae..ddeda2de 100644
--- a/blazar/tests/test_context.py
+++ b/blazar/tests/test_context.py
@@ -13,14 +13,27 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from oslo_config import cfg
+from oslo_config import fixture as conf_fixture
 from oslo_utils.fixture import uuidsentinel
 
 from blazar import context
 from blazar import tests
 
+CONF = cfg.CONF
+
 
 class TestBlazarContext(tests.TestCase):
 
+    def setUp(self):
+        super(TestBlazarContext, self).setUp()
+
+        self.cfg = self.useFixture(conf_fixture.Config(CONF))
+        self.cfg.config(os_admin_username='fake-admin')
+        self.cfg.config(os_admin_user_domain_name='fake-admin-domain')
+        self.cfg.config(os_admin_project_name='fake-admin-project')
+        self.cfg.config(os_admin_project_domain_name='fake-admin-domain')
+
     def test_to_dict(self):
         ctx = context.BlazarContext(
             user_id=111, project_id=222,
@@ -33,8 +46,6 @@ class TestBlazarContext(tests.TestCase):
             'is_admin_project': True,
             'project': 222,
             'project_domain': None,
-            'project_id': 222,
-            'project_name': None,
             'read_only': False,
             'request_id': 'req-679033b7-1755-4929-bf85-eb3bfaef7e0b',
             'resource_uuid': None,
@@ -45,15 +56,9 @@ class TestBlazarContext(tests.TestCase):
             'tenant': 222,
             'user': 111,
             'user_domain': None,
-            'user_id': 111,
-            'user_identity': '111 222 - - -',
-            'user_name': None}
+            'user_identity': '111 222 - - -'}
         self.assertEqual(expected, ctx.to_dict())
 
-    def test_elevated_empty(self):
-        ctx = context.BlazarContext.elevated()
-        self.assertTrue(ctx.is_admin)
-
     def test_service_catalog_default(self):
         ctxt = context.BlazarContext(user_id=uuidsentinel.user_id,
                                      project_id=uuidsentinel.project_id)
@@ -69,14 +74,30 @@ class TestBlazarContext(tests.TestCase):
                                      service_catalog=None)
         self.assertEqual([], ctxt.service_catalog)
 
-    def test_blazar_context_elevated(self):
-        user_context = context.BlazarContext(
-            user_id=uuidsentinel.user_id,
-            project_id=uuidsentinel.project_id, is_admin=False)
-        self.assertFalse(user_context.is_admin)
+    def test_admin(self):
+        ctx = context.admin()
+        self.assertEqual(ctx.user_name, 'fake-admin')
+        self.assertEqual(ctx.user_domain_name, 'fake-admin-domain')
+        self.assertEqual(ctx.project_name, 'fake-admin-project')
+        self.assertEqual(ctx.project_domain_name, 'fake-admin-domain')
+        self.assertEqual(ctx.is_admin, True)
 
-        admin_context = user_context.elevated()
-        self.assertFalse(user_context.is_admin)
-        self.assertTrue(admin_context.is_admin)
-        self.assertNotIn('admin', user_context.roles)
-        self.assertIn('admin', admin_context.roles)
+    def test_admin_nested(self):
+        """Test that admin properties take priority over current context."""
+        request_id = 'req-679033b7-1755-4929-bf85-eb3bfaef7e0b'
+        service_catalog = ['foo']
+        ctx = context.BlazarContext(
+            user_name='fake-user', user_domain_name='fake-user-domain',
+            project_name='fake-project',
+            project_domain_name='fake-user-domain',
+            service_catalog=service_catalog, request_id=request_id)
+        with ctx:
+            admin_ctx = context.admin()
+            self.assertEqual(admin_ctx.user_name, 'fake-admin')
+            self.assertEqual(admin_ctx.user_domain_name, 'fake-admin-domain')
+            self.assertEqual(admin_ctx.project_name, 'fake-admin-project')
+            self.assertEqual(admin_ctx.project_domain_name,
+                             'fake-admin-domain')
+            self.assertEqual(admin_ctx.is_admin, True)
+            self.assertEqual(admin_ctx.request_id, request_id)
+            self.assertEqual(admin_ctx.service_catalog, service_catalog)
diff --git a/blazar/tests/test_policy.py b/blazar/tests/test_policy.py
index f7da9356..df680324 100644
--- a/blazar/tests/test_policy.py
+++ b/blazar/tests/test_policy.py
@@ -52,15 +52,6 @@ class BlazarPolicyTestCase(tests.TestCase):
         self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
                           self.context, action, target)
 
-    def test_elevatedpolicy(self):
-        target = {'user_id': self.context.user_id,
-                  'project_id': self.context.project_id}
-        action = "blazar:oshosts:get"
-        self.assertRaises(exceptions.PolicyNotAuthorized, policy.enforce,
-                          self.context, action, target)
-        elevated_context = self.context.elevated()
-        self.assertTrue(policy.enforce(elevated_context, action, target))
-
     def test_authorize(self):
 
         @policy.authorize('leases', 'get', ctx=self.context)
diff --git a/blazar/tests/utils/openstack/test_keystone.py b/blazar/tests/utils/openstack/test_keystone.py
index b0ff0e70..b10f3572 100644
--- a/blazar/tests/utils/openstack/test_keystone.py
+++ b/blazar/tests/utils/openstack/test_keystone.py
@@ -38,56 +38,59 @@ class TestCKClient(tests.TestCase):
 
         self.version = '3'
         self.username = 'fake_user'
+        self.user_domain_name = 'fake_user_domain'
         self.token = 'fake_token'
         self.password = 'fake_pass'
-        self.tenant_name = 'fake_project'
+        self.project_name = 'fake_project'
+        self.project_domain_name = 'fake_project_domain'
         self.auth_url = 'fake_url'
         self.trust_id = 'fake_trust'
 
     def test_client_from_kwargs(self):
-
         self.ctx.side_effect = RuntimeError
-
-        self.keystone.BlazarKeystoneClient(version=self.version,
-                                           username=self.username,
-                                           password=self.password,
-                                           tenant_name=self.tenant_name,
-                                           trust_id=self.trust_id,
-                                           auth_url=self.auth_url)
-
-        self.client.assert_called_once_with(version=self.version,
-                                            trust_id=self.trust_id,
-                                            username=self.username,
-                                            password=self.password,
-                                            auth_url=self.auth_url)
+        self.keystone.BlazarKeystoneClient(
+            version=self.version,
+            username=self.username,
+            password=self.password,
+            project_name=self.project_name,
+            trust_id=self.trust_id,
+            auth_url=self.auth_url)
+        self.client.assert_called_once_with(
+            version=self.version,
+            trust_id=self.trust_id,
+            username=self.username,
+            password=self.password,
+            auth_url=self.auth_url)
 
     def test_client_from_kwargs_and_ctx(self):
-
-        self.keystone.BlazarKeystoneClient(version=self.version,
-                                           username=self.username,
-                                           password=self.password,
-                                           tenant_name=self.tenant_name,
-                                           auth_url=self.auth_url)
-
-        self.client.assert_called_once_with(version=self.version,
-                                            tenant_name=self.tenant_name,
-                                            endpoint='http://fake.com/',
-                                            username=self.username,
-                                            password=self.password,
-                                            auth_url=self.auth_url,
-                                            global_request_id=self.
-                                            context.current().
-                                            global_request_id)
+        self.keystone.BlazarKeystoneClient(
+            version=self.version,
+            username=self.username,
+            user_domain_name=self.user_domain_name,
+            password=self.password,
+            project_name=self.project_name,
+            project_domain_name=self.project_domain_name,
+            auth_url=self.auth_url)
+        self.client.assert_called_once_with(
+            version=self.version,
+            username=self.username,
+            user_domain_name=self.user_domain_name,
+            project_name=self.project_name,
+            project_domain_name=self.project_domain_name,
+            endpoint='http://fake.com/',
+            password=self.password,
+            auth_url=self.auth_url,
+            global_request_id=self.context.current().global_request_id)
 
     def test_client_from_ctx(self):
-
         self.keystone.BlazarKeystoneClient()
-
         self.client.assert_called_once_with(
             version='3',
             username=self.ctx().user_name,
+            user_domain_name=self.ctx().user_domain_name,
             token=self.ctx().auth_token,
-            tenant_name=self.ctx().project_name,
+            project_name=self.ctx().project_name,
+            project_domain_name=self.ctx().project_domain_name,
             auth_url='http://fake.com/',
             endpoint='http://fake.com/',
             global_request_id=self.context.current().global_request_id)
diff --git a/blazar/tests/utils/test_trusts.py b/blazar/tests/utils/test_trusts.py
index a6084619..0b35577e 100644
--- a/blazar/tests/utils/test_trusts.py
+++ b/blazar/tests/utils/test_trusts.py
@@ -65,10 +65,8 @@ class TestTrusts(tests.TestCase):
             'global_request_id': self.context.current().global_request_id,
             'is_admin': False,
             'is_admin_project': True,
-            'project': self.client().tenant_id,
+            'project': self.client().project_id,
             'project_domain': None,
-            'project_id': self.client().tenant_id,
-            'project_name': 'admin',
             'read_only': False,
             'request_id': ctx.request_id,
             'resource_uuid': None,
@@ -76,10 +74,8 @@ class TestTrusts(tests.TestCase):
             'service_catalog': ctx.service_catalog,
             'show_deleted': False,
             'system_scope': None,
-            'tenant': self.client().tenant_id,
             'user': None,
-            'user_domain': None,
-            'user_id': None}
+            'user_domain': None}
         self.assertDictContainsSubset(fake_ctx_dict, ctx.to_dict())
 
     def test_use_trust_auth_dict(self):
diff --git a/blazar/utils/openstack/keystone.py b/blazar/utils/openstack/keystone.py
index 5ada2ac7..e52c7a92 100644
--- a/blazar/utils/openstack/keystone.py
+++ b/blazar/utils/openstack/keystone.py
@@ -101,7 +101,9 @@ class BlazarKeystoneClient(object):
         kwargs.setdefault('version', cfg.CONF.keystone_client_version)
         if ctx is not None:
             kwargs.setdefault('username', ctx.user_name)
-            kwargs.setdefault('tenant_name', ctx.project_name)
+            kwargs.setdefault('user_domain_name', ctx.user_domain_name)
+            kwargs.setdefault('project_name', ctx.project_name)
+            kwargs.setdefault('project_domain_name', ctx.project_domain_name)
             kwargs.setdefault('global_request_id', ctx.global_request_id)
             if not kwargs.get('auth_url'):
                 kwargs['auth_url'] = base.url_for(
@@ -121,8 +123,8 @@ class BlazarKeystoneClient(object):
         # NOTE(dbelova): we need this checking to support current
         # keystoneclient: token can only be scoped now to either
         # a trust or project, not both.
-        if kwargs.get('trust_id') and kwargs.get('tenant_name'):
-            kwargs.pop('tenant_name')
+        if kwargs.get('trust_id') and kwargs.get('project_name'):
+            kwargs.pop('project_name')
 
         try:
             # NOTE(n.s.): we shall remove this try: except: clause when
diff --git a/blazar/utils/service.py b/blazar/utils/service.py
index 1690de7a..ef94d03e 100644
--- a/blazar/utils/service.py
+++ b/blazar/utils/service.py
@@ -74,7 +74,7 @@ class ContextEndpointHandler(object):
             method = getattr(self.__endpoint, name)
 
             def run_method(__ctx, **kwargs):
-                with context.BlazarContext(**__ctx):
+                with context.BlazarContext.from_dict(__ctx):
                     return method(**kwargs)
 
             return run_method
diff --git a/blazar/utils/trusts.py b/blazar/utils/trusts.py
index 74a70483..a3c3c10e 100644
--- a/blazar/utils/trusts.py
+++ b/blazar/utils/trusts.py
@@ -29,9 +29,8 @@ def create_trust():
     client = keystone.BlazarKeystoneClient()
 
     trustee_id = keystone.BlazarKeystoneClient(
-        username=CONF.os_admin_username,
         password=CONF.os_admin_password,
-        tenant_name=CONF.os_admin_project_name).user_id
+        ctx=context.admin()).user_id
 
     ctx = context.current()
     trust = client.trusts.create(trustor_user=ctx.user_id,
@@ -53,31 +52,26 @@ def create_ctx_from_trust(trust_id):
     """Return context built from given trust."""
     ctx = context.current()
 
-    ctx = context.BlazarContext(
-        user_name=CONF.os_admin_username,
-        project_name=CONF.os_admin_project_name,
-        request_id=ctx.request_id,
-        global_request_id=ctx.global_request_id
-    )
     auth_url = "%s://%s:%s" % (CONF.os_auth_protocol,
                                base.get_os_auth_host(CONF),
                                CONF.os_auth_port)
     if CONF.os_auth_prefix:
         auth_url += "/%s" % CONF.os_auth_prefix
+
     client = keystone.BlazarKeystoneClient(
         password=CONF.os_admin_password,
         trust_id=trust_id,
         auth_url=auth_url,
-        ctx=ctx,
+        ctx=context.admin(),
     )
 
     # use 'with ctx' statement in the place you need context from trust
     return context.BlazarContext(
         user_name=ctx.user_name,
-        project_name=ctx.project_name,
+        user_domain_name=ctx.user_domain_name,
         auth_token=client.auth_token,
         service_catalog=client.service_catalog.catalog['catalog'],
-        project_id=client.tenant_id,
+        project_id=client.project_id,
         request_id=ctx.request_id,
         global_request_id=ctx.global_request_id
     )
diff --git a/releasenotes/notes/bug-1881162-ebe012fcc7176594.yaml b/releasenotes/notes/bug-1881162-ebe012fcc7176594.yaml
new file mode 100644
index 00000000..8ad56c91
--- /dev/null
+++ b/releasenotes/notes/bug-1881162-ebe012fcc7176594.yaml
@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    Allows users of multiple Keystone domains to create leases; previously only users
+    and projects in the default domain could use Blazar.