diff --git a/fed_reg/flavor/crud.py b/fed_reg/flavor/crud.py
index 2a1ac0f2..5a2af80f 100644
--- a/fed_reg/flavor/crud.py
+++ b/fed_reg/flavor/crud.py
@@ -51,9 +51,9 @@ def create(
         else:
             # It's indifferent which service, we want to reach the provider
             db_service = db_obj.services.single()
-            db_region = db_service.regions.single()
+            db_region = db_service.region.single()
             db_provider1 = db_region.provider.single()
-            db_region = service.regions.single()
+            db_region = service.region.single()
             db_provider2 = db_region.provider.single()
             if db_provider1 != db_provider2:
                 db_obj = super().create(obj_in=obj_in)
diff --git a/fed_reg/flavor/schemas_extended.py b/fed_reg/flavor/schemas_extended.py
index 07289076..eefec15c 100644
--- a/fed_reg/flavor/schemas_extended.py
+++ b/fed_reg/flavor/schemas_extended.py
@@ -58,7 +58,7 @@ class ComputeServiceReadExtended(ComputeServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
@@ -72,7 +72,7 @@ class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class FlavorReadExtended(BaseNodeRead, BaseReadPrivateExtended, FlavorBase):
diff --git a/fed_reg/image/crud.py b/fed_reg/image/crud.py
index e0d220ff..e994b60f 100644
--- a/fed_reg/image/crud.py
+++ b/fed_reg/image/crud.py
@@ -46,9 +46,9 @@ def create(
         else:
             # It's indifferent which service, we want to reach the provider
             db_service = db_obj.services.single()
-            db_region = db_service.regions.single()
+            db_region = db_service.region.single()
             db_provider1 = db_region.provider.single()
-            db_region = service.regions.single()
+            db_region = service.region.single()
             db_provider2 = db_region.provider.single()
             if db_provider1 != db_provider2:
                 db_obj = super().create(obj_in=obj_in)
diff --git a/fed_reg/image/schemas_extended.py b/fed_reg/image/schemas_extended.py
index 0a7bcd0e..d68251a2 100644
--- a/fed_reg/image/schemas_extended.py
+++ b/fed_reg/image/schemas_extended.py
@@ -53,7 +53,7 @@ class ComputeServiceReadExtended(ComputeServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
@@ -67,7 +67,7 @@ class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class ImageReadExtended(BaseNodeRead, BaseReadPrivateExtended, ImageBase):
diff --git a/fed_reg/network/schemas_extended.py b/fed_reg/network/schemas_extended.py
index 7078f377..4379bfd4 100644
--- a/fed_reg/network/schemas_extended.py
+++ b/fed_reg/network/schemas_extended.py
@@ -60,7 +60,7 @@ class NetworkServiceReadExtended(NetworkServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
@@ -74,7 +74,7 @@ class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class NetworkReadExtended(BaseNodeRead, BaseReadPrivateExtended, NetworkBase):
diff --git a/fed_reg/project/api/utils.py b/fed_reg/project/api/utils.py
index fdbeec95..9452aa29 100644
--- a/fed_reg/project/api/utils.py
+++ b/fed_reg/project/api/utils.py
@@ -16,18 +16,18 @@ def filter_on_region_attr(  # noqa: C901
     for item in items:
         for quota in item.quotas:
             service = quota.service.single()
-            if not service.regions.get_or_none(**attrs):
+            if not service.region.get_or_none(**attrs):
                 item.quotas = item.quotas.exclude(uid=quota.uid)
         for flavor in item.private_flavors:
             service = flavor.service.single()
-            if not service.regions.get_or_none(**attrs):
+            if not service.region.get_or_none(**attrs):
                 item.private_flavors = item.private_flavors.exclude(uid=flavor.uid)
         for image in item.private_images:
             service = image.service.single()
-            if not service.regions.get_or_none(**attrs):
+            if not service.region.get_or_none(**attrs):
                 item.private_images = item.private_images.exclude(uid=image.uid)
         for network in item.private_networks:
             service = network.service.single()
-            if not service.regions.get_or_none(**attrs):
+            if not service.region.get_or_none(**attrs):
                 item.private_networks = item.private_networks.exclude(uid=network.uid)
     return items
diff --git a/fed_reg/project/schemas_extended.py b/fed_reg/project/schemas_extended.py
index 71e39569..13fbddbb 100644
--- a/fed_reg/project/schemas_extended.py
+++ b/fed_reg/project/schemas_extended.py
@@ -74,7 +74,7 @@ class BlockStorageServiceReadExtended(BlockStorageServiceRead):
         region (RegionRead): Region hosting this service.
     """
 
-    regions: list[RegionRead] = Field(description=DOC_EXT_REG)
+    region: RegionRead = Field(description=DOC_EXT_REG)
 
 
 class BlockStorageServiceReadExtendedPublic(BlockStorageServiceReadPublic):
@@ -88,7 +88,7 @@ class BlockStorageServiceReadExtendedPublic(BlockStorageServiceReadPublic):
         region (RegionReadPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadPublic = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtended(ComputeServiceRead):
@@ -104,7 +104,7 @@ class ComputeServiceReadExtended(ComputeServiceRead):
         region (RegionRead): Region hosting this service.
     """
 
-    regions: list[RegionRead] = Field(description=DOC_EXT_REG)
+    region: RegionRead = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
@@ -118,7 +118,7 @@ class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
         region (RegionReadPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadPublic = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtended(NetworkServiceRead):
@@ -134,7 +134,7 @@ class NetworkServiceReadExtended(NetworkServiceRead):
         region (RegionRead): Region hosting this service.
     """
 
-    regions: list[RegionRead] = Field(description=DOC_EXT_REG)
+    region: RegionRead = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
@@ -148,7 +148,7 @@ class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
         region (RegionReadPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadPublic = Field(description=DOC_EXT_REG)
 
 
 class ObjectStoreServiceReadExtended(ObjectStoreServiceRead):
@@ -164,7 +164,7 @@ class ObjectStoreServiceReadExtended(ObjectStoreServiceRead):
         region (RegionRead): Region hosting this service.
     """
 
-    regions: list[RegionRead] = Field(description=DOC_EXT_REG)
+    region: RegionRead = Field(description=DOC_EXT_REG)
 
 
 class ObjectStoreServiceReadExtendedPublic(ObjectStoreServiceReadPublic):
@@ -178,7 +178,7 @@ class ObjectStoreServiceReadExtendedPublic(ObjectStoreServiceReadPublic):
         region (RegionReadPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadPublic = Field(description=DOC_EXT_REG)
 
 
 class BlockStorageQuotaReadExtended(BlockStorageQuotaRead):
diff --git a/fed_reg/quota/schemas_extended.py b/fed_reg/quota/schemas_extended.py
index 8bcb340e..9266da60 100644
--- a/fed_reg/quota/schemas_extended.py
+++ b/fed_reg/quota/schemas_extended.py
@@ -80,7 +80,7 @@ class BlockStorageServiceReadExtended(BlockStorageServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class BlockStorageServiceReadExtendedPublic(BlockStorageServiceReadPublic):
@@ -94,7 +94,7 @@ class BlockStorageServiceReadExtendedPublic(BlockStorageServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtended(ComputeServiceRead):
@@ -110,7 +110,7 @@ class ComputeServiceReadExtended(ComputeServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
@@ -124,7 +124,7 @@ class ComputeServiceReadExtendedPublic(ComputeServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtended(NetworkServiceRead):
@@ -140,7 +140,7 @@ class NetworkServiceReadExtended(NetworkServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
@@ -154,7 +154,7 @@ class NetworkServiceReadExtendedPublic(NetworkServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class ObjectStoreServiceReadExtended(ObjectStoreServiceRead):
@@ -170,7 +170,7 @@ class ObjectStoreServiceReadExtended(ObjectStoreServiceRead):
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class ObjectStoreServiceReadExtendedPublic(ObjectStoreServiceReadPublic):
@@ -184,7 +184,7 @@ class ObjectStoreServiceReadExtendedPublic(ObjectStoreServiceReadPublic):
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class BlockStorageQuotaReadExtended(
diff --git a/fed_reg/service/crud.py b/fed_reg/service/crud.py
index 4b0d461a..790f6284 100644
--- a/fed_reg/service/crud.py
+++ b/fed_reg/service/crud.py
@@ -102,8 +102,10 @@ def create(
         """
         if projects is None:
             projects = []
-        db_obj = super().create(obj_in=obj_in)
-        db_obj.regions.connect(region)
+        db_obj = region.services.filter(endpoint=obj_in.endpoint, type=obj_in.type)
+        if not db_obj:
+            db_obj = super().create(obj_in=obj_in)
+            db_obj.region.connect(region)
         for item in obj_in.quotas:
             db_projects = list(filter(lambda x: x.uuid == item.project, projects))
             if len(db_projects) == 1:
@@ -245,10 +247,10 @@ def create(
         """
         if projects is None:
             projects = []
-        db_obj = self.get(endpoint=obj_in.endpoint)
+        db_obj = region.services.filter(endpoint=obj_in.endpoint, type=obj_in.type)
         if not db_obj:
             db_obj = super().create(obj_in=obj_in)
-        db_obj.regions.connect(region)
+            db_obj.region.connect(region)
         for item in obj_in.flavors:
             db_projects = list(filter(lambda x: x.uuid in item.projects, projects))
             flavor_mng.create(obj_in=item, service=db_obj, projects=db_projects)
@@ -475,14 +477,14 @@ def create(
 
         Connect the service to the given region.
         """
-        db_obj = self.get(endpoint=obj_in.endpoint)
+        db_obj = region.services.filter(endpoint=obj_in.endpoint, type=obj_in.type)
         if not db_obj:
             db_obj = super().create(obj_in=obj_in)
+            db_obj.region.connect(region)
         else:
             updated_data = self.update(db_obj=db_obj, obj_in=obj_in)
             if updated_data:
                 db_obj = updated_data
-        db_obj.regions.connect(region)
         return db_obj
 
 
@@ -513,10 +515,10 @@ def create(
         """
         if projects is None:
             projects = []
-        db_obj = self.get(endpoint=obj_in.endpoint)
+        db_obj = region.services.filter(endpoint=obj_in.endpoint, type=obj_in.type)
         if not db_obj:
             db_obj = super().create(obj_in=obj_in)
-        db_obj.regions.connect(region)
+            db_obj.region.connect(region)
         for item in obj_in.networks:
             db_projects = list(filter(lambda x: x.uuid == item.project, projects))
             db_project = None
@@ -705,10 +707,10 @@ def create(
         """
         if projects is None:
             projects = []
-        db_obj = self.get(endpoint=obj_in.endpoint)
+        db_obj = region.services.filter(endpoint=obj_in.endpoint, type=obj_in.type)
         if not db_obj:
             db_obj = super().create(obj_in=obj_in)
-        db_obj.regions.connect(region)
+            db_obj.region.connect(region)
         for item in obj_in.quotas:
             db_projects = list(filter(lambda x: x.uuid == item.project, projects))
             if len(db_projects) == 1:
diff --git a/fed_reg/service/models.py b/fed_reg/service/models.py
index de3315c8..acbff9d2 100644
--- a/fed_reg/service/models.py
+++ b/fed_reg/service/models.py
@@ -1,6 +1,6 @@
 """Neomodel models of the Service supplied by a Provider on a specific Region."""
 from neomodel import (
-    OneOrMore,
+    One,
     RelationshipFrom,
     RelationshipTo,
     StringProperty,
@@ -29,12 +29,12 @@ class Service(StructuredNode):
 
     uid = UniqueIdProperty()
     description = StringProperty(default="")
-    endpoint = StringProperty(unique_index=True, required=True)
+    endpoint = StringProperty(required=True)
     type = StringProperty(required=True)
     name = StringProperty(required=True)
 
-    regions = RelationshipFrom(
-        "fed_reg.region.models.Region", "SUPPLY", cardinality=OneOrMore
+    region = RelationshipFrom(
+        "fed_reg.region.models.Region", "SUPPLY", cardinality=One
     )
 
 
diff --git a/fed_reg/service/schemas_extended.py b/fed_reg/service/schemas_extended.py
index c59fc336..a7da2107 100644
--- a/fed_reg/service/schemas_extended.py
+++ b/fed_reg/service/schemas_extended.py
@@ -239,7 +239,7 @@ class BlockStorageServiceReadExtended(
         quotas (list of BlockStorageQuotaReadExtended): Quotas pointing to this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
     quotas: list[BlockStorageQuotaReadExtended] = Field(description=DOC_EXT_QUOTA)
 
 
@@ -258,7 +258,7 @@ class BlockStorageServiceReadExtendedPublic(
             service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
     quotas: list[BlockStorageQuotaReadExtendedPublic] = Field(description=DOC_EXT_QUOTA)
 
 
@@ -280,7 +280,7 @@ class ComputeServiceReadExtended(
         quotas (list of ComputeQuotaReadExtended): Quotas pointing to this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
     quotas: list[ComputeQuotaReadExtended] = Field(description=DOC_EXT_QUOTA)
     flavors: list[FlavorRead] = Field(description=DOC_EXT_FLAV)
     images: list[ImageRead] = Field(description=DOC_EXT_IMAG)
@@ -303,7 +303,7 @@ class ComputeServiceReadExtendedPublic(
             service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
     quotas: list[ComputeQuotaReadExtendedPublic] = Field(description=DOC_EXT_QUOTA)
     flavors: list[FlavorReadPublic] = Field(description=DOC_EXT_FLAV)
     images: list[ImageReadPublic] = Field(description=DOC_EXT_IMAG)
@@ -324,7 +324,7 @@ class IdentityServiceReadExtended(
         region (RegionReadExtended): Region hosting this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
 
 
 class IdentityServiceReadExtendedPublic(
@@ -340,7 +340,7 @@ class IdentityServiceReadExtendedPublic(
         region (RegionReadExtendedPublic): Region hosting this service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
 
 
 class NetworkServiceReadExtended(
@@ -360,7 +360,7 @@ class NetworkServiceReadExtended(
         quotas (list of NetworkQuotaReadExtended): Quotas pointing to this service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
     quotas: list[NetworkQuotaReadExtended] = Field(description=DOC_EXT_QUOTA)
     networks: list[NetworkRead] = Field(description=DOC_EXT_NETW)
 
@@ -381,7 +381,7 @@ class NetworkServiceReadExtendedPublic(
             service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
     quotas: list[NetworkQuotaReadExtendedPublic] = Field(description=DOC_EXT_QUOTA)
     networks: list[NetworkReadPublic] = Field(description=DOC_EXT_NETW)
 
@@ -403,7 +403,7 @@ class ObjectStoreServiceReadExtended(
             service.
     """
 
-    regions: list[RegionReadExtended] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtended = Field(description=DOC_EXT_REG)
     quotas: list[ObjectStoreQuotaReadExtended] = Field(description=DOC_EXT_QUOTA)
 
 
@@ -422,7 +422,7 @@ class ObjectStoreServiceReadExtendedPublic(
             service.
     """
 
-    regions: list[RegionReadExtendedPublic] = Field(description=DOC_EXT_REG)
+    region: RegionReadExtendedPublic = Field(description=DOC_EXT_REG)
     quotas: list[ObjectStoreQuotaReadExtendedPublic] = Field(
         description=DOC_EXT_QUOTA
     )
diff --git a/fed_reg/user_group/api/utils.py b/fed_reg/user_group/api/utils.py
index bb21738e..c8b0efd0 100644
--- a/fed_reg/user_group/api/utils.py
+++ b/fed_reg/user_group/api/utils.py
@@ -40,7 +40,7 @@ def filter_on_region_attr(
             for project in sla.projects:
                 for quota in project.quotas:
                     service = quota.service.single()
-                    if not service.regions.get_or_none(**attrs):
+                    if not service.region.get_or_none(**attrs):
                         project.quotas = project.quotas.exclude(uid=quota.uid)
                 if len(project.quotas) == 0:
                     sla.projects = sla.projects.exclude(uid=project.uid)