diff --git a/greg/management/commands/import_from_orgreg.py b/greg/management/commands/import_from_orgreg.py
index 732a68206ba4bb8599e3de7c7cc4d8972cff9367..2411ed04921d25484d88af2c451043c80b262504 100644
--- a/greg/management/commands/import_from_orgreg.py
+++ b/greg/management/commands/import_from_orgreg.py
@@ -28,6 +28,75 @@ class Command(BaseCommand):
     help = __doc__
     processed: Dict[int, OrganizationalUnit] = {}
 
+    def _upsert_extra_identities(
+        self,
+        ou: OrgUnit,
+    ):
+        """Upsert any configured extra IDs from orgreg."""
+        for extra_id in settings.ORGREG_EXTRA_IDS:
+
+            matching_ids = [
+                x
+                for x in ou.external_keys
+                if x.source_system == extra_id["source"] and x.type == extra_id["type"]
+            ]
+
+            if not matching_ids:
+                logger.warning(
+                    "No %s id from %s found in OrgReg for ou %s",
+                    extra_id["type"],
+                    extra_id["source"],
+                    ou.ou_id,
+                )
+                continue
+
+            if len(matching_ids) > 1:
+                # External_ids
+                logger.warning(
+                    "Found multiple ids matching type: %s source: %s in OrgReg. Using the first one: %s",
+                    extra_id["type"],
+                    extra_id["source"],
+                    matching_ids[0].value,
+                )
+
+            identity_in_orgreg = matching_ids[0]
+
+            # Check if the id exists
+            identify_in_db = (
+                self.processed[ou.ou_id]
+                .identifiers.filter(
+                    source=extra_id["source"],
+                    name=extra_id["type"],
+                )
+                .first()
+            )
+
+            if identify_in_db:
+                if identify_in_db.value != identity_in_orgreg.value:
+                    logger.info(
+                        "Updating id: source: %s, type: %s, old_id: %s, new_id %s",
+                        extra_id["source"],
+                        extra_id["type"],
+                        identify_in_db.value,
+                        identity_in_orgreg.value,
+                    )
+                    identify_in_db.value = identity_in_orgreg.value
+                    identify_in_db.save()
+            else:
+                OuIdentifier.objects.create(
+                    name=extra_id["type"],
+                    source=extra_id["source"],
+                    value=identity_in_orgreg["value"],
+                    orgunit=self.processed[ou.ou_id],
+                )
+                logger.info(
+                    "Added new id to ou: %s, type: %s, source: %s value: %s",
+                    ou.ou_id,
+                    extra_id["type"],
+                    extra_id["source"],
+                    identity_in_orgreg["value"],
+                )
+
     def _get_or_create_and_set_values(
         self, ou: OrgUnit, values: Mapping[str, Union[str, int, bool]]
     ):
@@ -50,6 +119,7 @@ class Command(BaseCommand):
             created = False
         for k, v in values.items():
             setattr(self.processed[ou.ou_id], k, v)
+        self._upsert_extra_identities(ou)
         self.processed[ou.ou_id].save()
         logger.info(
             "%s %s with %s",
diff --git a/gregsite/settings/base.py b/gregsite/settings/base.py
index 7a618734d1a449a891d4e8078810d3064a4500e1..11a32801be699f13e49a383c0945d8b91229f7da 100644
--- a/gregsite/settings/base.py
+++ b/gregsite/settings/base.py
@@ -11,7 +11,7 @@ https://docs.djangoproject.com/en/3.2/ref/settings/
 """
 
 from pathlib import Path
-from typing import List, Literal
+from typing import List
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
@@ -271,3 +271,7 @@ FEIDE_SOURCE = "feide"
 # Used by the OU import from orgreg to distinguish the OuIdentifiers from others
 ORGREG_SOURCE = "orgreg"
 ORGREG_NAME = "orgreg_id"
+
+# Extra ids to be imported from orgreg, list of dict with source/type.
+# [{"source": "sapuio", "type": "legacy_stedkode"}]
+ORGREG_EXTRA_IDS = []