diff --git a/invenio_records_resources/services/records/service.py b/invenio_records_resources/services/records/service.py
index 1d816b51..b76f3ca8 100644
--- a/invenio_records_resources/services/records/service.py
+++ b/invenio_records_resources/services/records/service.py
@@ -17,6 +17,7 @@
 from invenio_search import current_search_client
 from invenio_search.engine import dsl
 from kombu import Queue
+from marshmallow import ValidationError
 from werkzeug.local import LocalProxy
 
 from invenio_records_resources.services.errors import (
@@ -26,8 +27,9 @@
 
 from ..base import LinksTemplate, Service
 from ..errors import RevisionIdMismatchError
-from ..uow import RecordCommitOp, RecordDeleteOp, unit_of_work
+from ..uow import RecordBulkCommitOp, RecordCommitOp, RecordDeleteOp, unit_of_work
 from .schema import ServiceSchemaWrapper
+from sqlalchemy.orm.exc import NoResultFound
 
 
 class RecordIndexerMixin:
@@ -579,3 +581,65 @@ def on_relation_update(
 
             self.reindex(identity, search_query=search_query)
         return True
+
+
+    @unit_of_work()
+    def create_update_many(self, identity, data, revision_id=None, uow=None, expand=False):
+        """Replace many records."""
+        records_to_update = []
+        records_to_create = []
+        errors = []
+        for record_id, record_data in data:
+            try:
+                record = self.record_cls.pid.resolve(record_id)
+                self.check_revision_id(record, revision_id)
+
+                # Permissions
+                self.require_permission(identity, "update", record=record)
+                try:
+                    record_data, _ = self.schema.load(
+                        record_data, context=dict(identity=identity, pid=record.pid, record=record)
+                    )
+                except ValidationError as err:
+                    errors.append(dict(record=record_data, errors=err.messages))
+                    continue
+                    # TODO add other error handling when adding tests
+
+                # Run components
+                self.run_components("update", identity, data=record_data, record=record, uow=uow)
+                # Update
+                
+                records_to_update.append(record)
+            except NoResultFound:
+                try:
+                    self.require_permission(identity, "create")
+                    
+                    # Validate data and create record with pid
+                    record_data, schema_errors = self.schema.load(
+                        record_data,
+                        context={"identity": identity}
+                    )
+                except ValidationError as err:
+                    errors.append(dict(record=record_data, errors=err.messages))
+                    continue
+                # TODO add other error handling when adding tests
+                
+                # It's the components who saves the actual data in the record.
+                record = self.record_cls.create({})
+
+                # Run components
+                self.run_components(
+                    "create",
+                    identity,
+                    data=record_data,
+                    record=record,
+                    errors=schema_errors,
+                    uow=uow,
+                )
+                
+                records_to_create.append(record)
+
+        records = records_to_update + records_to_create
+        uow.register(RecordBulkCommitOp(records, self.indexer))
+
+        return records, errors
diff --git a/invenio_records_resources/services/uow.py b/invenio_records_resources/services/uow.py
index 32b5e3be..72dc267c 100644
--- a/invenio_records_resources/services/uow.py
+++ b/invenio_records_resources/services/uow.py
@@ -182,6 +182,29 @@ def on_commit(self, uow):
             arguments = {"refresh": True} if self._index_refresh else {}
             self._indexer.index(self._record, arguments=arguments)
 
+class RecordBulkCommitOp(Operation):
+    """Record bulk commit operation with indexing."""
+
+    def __init__(self, records, indexer=None, index_refresh=False):
+        """Initialize the bulk record commit operation."""
+        self._records = records
+        self._indexer = indexer
+        self._index_refresh = index_refresh
+        
+
+    def on_register(self, uow):
+        """Save objects to the session."""
+        for record in self._records:
+            json = record._validate()
+            record.model.json = json
+            uow.session.merge(record.model)
+            # TODO find a better way to save the record
+
+    def on_commit(self, uow):
+        """Run the operation."""
+        if self._indexer is not None:
+            record_ids = [record.id for record in self._records]
+            self._indexer.bulk_index(record_ids)
 
 class RecordIndexOp(RecordCommitOp):
     """Record indexing operation."""