diff --git a/Koha/REST/V1/RecordSources.pm b/Koha/REST/V1/RecordSources.pm
index 46ba7dbc6e..b3d2320b97 100644
--- a/Koha/REST/V1/RecordSources.pm
+++ b/Koha/REST/V1/RecordSources.pm
@@ -81,6 +81,17 @@ sub add {
             openapi => $c->objects->to_api($source)
         );
     } catch {
+        if ( blessed $_ and $_->isa('Koha::Exceptions::Object::DuplicateID') ) {
+            return $c->render(
+                status  => 409,
+                openapi => { error => 'Duplicate name.' }
+            );
+        } elsif ( blessed $_ and $_->isa('Koha::Exceptions::BadParameter') ) {
+            return $c->render(
+                status  => 409,
+                openapi => { error => 'Name not allowed.' }
+            );
+        }
         $c->unhandled_exception($_);
     };
 }
@@ -97,11 +108,29 @@ sub update {
     return $c->render_resource_not_found("Record source")
         unless $source;
 
+    if ( $source->is_system ) {
+        return $c->render(
+            status  => 409,
+            openapi => { error => 'Cannot edit system defined value.' }
+        );
+    }
+
     return try {
         $source->set_from_api( $c->req->json )->store;
         $source->discard_changes;
         return $c->render( status => 200, openapi => $c->objects->to_api($source) );
     } catch {
+        if ( blessed $_ and $_->isa('Koha::Exceptions::Object::DuplicateID') ) {
+            return $c->render(
+                status  => 409,
+                openapi => { error => 'Duplicate name.' }
+            );
+        } elsif ( blessed $_ and $_->isa('Koha::Exceptions::BadParameter') ) {
+            return $c->render(
+                status  => 409,
+                openapi => { error => 'Name not allowed.' }
+            );
+        }
         $c->unhandled_exception($_);
     };
 }
@@ -130,6 +159,14 @@ sub delete {
                     error_code => 'cannot_delete_used',
                 }
             );
+        } elsif ( blessed $_ and $_->isa('Koha::Exceptions::CannotDeleteDefault') ) {
+            return $c->render(
+                status  => 409,
+                openapi => {
+                    error      => 'Cannot delete system defined record source',
+                    error_code => 'cannot_delete_is_system',
+                }
+            );
         }
         $c->unhandled_exception($_);
     };
diff --git a/Koha/RecordSource.pm b/Koha/RecordSource.pm
index 9c11f695e6..a2214c9ff8 100644
--- a/Koha/RecordSource.pm
+++ b/Koha/RecordSource.pm
@@ -46,6 +46,31 @@ sub usage_count {
     return $self->_result->biblio_metadatas->count();
 }
 
+=head3 store
+
+=cut
+
+sub store {
+    my ($self) = @_;
+    Koha::Exceptions::BadParameter->throw('* not allowed') if $self->name eq '*';
+
+    return $self->SUPER::store;
+}
+
+=head3 delete
+
+Overridden delete method to prevent system default deletions
+
+=cut
+
+sub delete {
+    my ($self) = @_;
+
+    Koha::Exceptions::CannotDeleteDefault->throw if $self->is_system;
+
+    return $self->SUPER::delete;
+}
+
 =head2 Internal methods
 
 =head3 _type
diff --git a/api/v1/swagger/definitions/record_source.yaml b/api/v1/swagger/definitions/record_source.yaml
index 4bd3f05265..de52257e9b 100644
--- a/api/v1/swagger/definitions/record_source.yaml
+++ b/api/v1/swagger/definitions/record_source.yaml
@@ -14,6 +14,9 @@ properties:
   usage_count:
     description: Record source usage count (x-koha-embed)
     type: integer
+  is_system:
+    description: Is this record source system or not
+    type: boolean
 additionalProperties: false
 required:
   - name
diff --git a/api/v1/swagger/paths/record_sources.yaml b/api/v1/swagger/paths/record_sources.yaml
index 732368e2ae..dc197ac9f3 100644
--- a/api/v1/swagger/paths/record_sources.yaml
+++ b/api/v1/swagger/paths/record_sources.yaml
@@ -97,6 +97,13 @@
         description: Not allowed
         schema:
           $ref: "../swagger.yaml#/definitions/error"
+      "409":
+        description: |
+          Conflict creating the resource. Possible `error_code` attribute values:
+
+          * `duplicate`
+        schema:
+          $ref: "../swagger.yaml#/definitions/error"
       "500":
         description: |
           Internal server error. Possible `error_code` attribute values:
@@ -198,6 +205,13 @@
         description: Not found
         schema:
           $ref: "../swagger.yaml#/definitions/error"
+      "409":
+        description: |
+          Conflict creating the resource. Possible `error_code` attribute values:
+
+          * `duplicate`
+        schema:
+          $ref: "../swagger.yaml#/definitions/error"
       "500":
         description: |
           Internal server error. Possible `error_code` attribute values:
@@ -248,6 +262,7 @@
           Conflict in deleting resource. Possible `error_code` attribute values:
 
           * `cannot_delete_used`: record source linked to a record cannot be deleted.
+          * `cannot_delete_is_system`: record source is system defined and cannot be deleted.
         schema:
           $ref: "../swagger.yaml#/definitions/error"
       "500":
diff --git a/installer/data/mysql/atomicupdate/bug_35380.pl b/installer/data/mysql/atomicupdate/bug_35380.pl
new file mode 100644
index 0000000000..3d112ed43d
--- /dev/null
+++ b/installer/data/mysql/atomicupdate/bug_35380.pl
@@ -0,0 +1,43 @@
+use Modern::Perl;
+
+return {
+    bug_number  => "35380",
+    description =>
+        "Add new unique name to record sources, add default record sources, add is_system column to default record sources.",
+    up => sub {
+        my ($args) = @_;
+        my ( $dbh, $out ) = @$args{qw(dbh out)};
+
+        # change name to be unique
+        if ( !unique_key_exists( 'record_sources', 'name' ) ) {
+            $dbh->do(
+                q{
+                ALTER TABLE record_sources
+                ADD UNIQUE KEY name (`name`)
+            }
+            );
+            say $out "Added unique key 'name' ";
+        }
+
+        # add column is system
+        unless ( column_exists( 'record_sources', 'is_system' ) ) {
+            $dbh->do(
+                q{ ALTER TABLE record_sources ADD COLUMN `is_system` TINYINT(1) NOT NULL DEFAULT 0 AFTER can_be_edited }
+            );
+            say $out "Added column 'record_sources.is_system'";
+        }
+
+        $dbh->do(
+            q{
+            INSERT IGNORE INTO record_sources ( name, can_be_edited, is_system )
+            VALUES
+            ('batchmod', 1, 1 ),
+            ('intranet', 1, 1 ),
+            ('batchimport', 1, 1 ),
+            ('z3950', 1, 1 ),
+            ('bulkmarcimport', 1, 1 ),
+            ('import_lexile', 1, 1 )
+        }
+        );
+    },
+};
diff --git a/installer/data/mysql/kohastructure.sql b/installer/data/mysql/kohastructure.sql
index 00e86d535e..ada8472dcc 100644
--- a/installer/data/mysql/kohastructure.sql
+++ b/installer/data/mysql/kohastructure.sql
@@ -5679,7 +5679,9 @@ CREATE TABLE `record_sources` (
   `record_source_id` int(11) NOT NULL AUTO_INCREMENT COMMENT 'Primary key for the `record_sources` table',
   `name` text NOT NULL COMMENT 'User defined name for the record source',
   `can_be_edited` tinyint(1) NOT NULL DEFAULT 0 COMMENT 'If records from this source can be edited',
-  PRIMARY KEY (`record_source_id`)
+  `is_system` tinyint(1) NOT NULL DEFAULT 0,
+  PRIMARY KEY (`record_source_id`),
+  UNIQUE KEY `name` (`name`(191))
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
 /*!40101 SET character_set_client = @saved_cs_client */;