diff --git a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/FileUploader/FileModification/FileModification.js b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/FileUploader/FileModification/FileModification.js
index aec366513..60d85cfa7 100644
--- a/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/FileUploader/FileModification/FileModification.js
+++ b/invenio_rdm_records/assets/semantic-ui/js/invenio_rdm_records/src/deposit/fields/FileUploader/FileModification/FileModification.js
@@ -1,10 +1,11 @@
 // This file is part of InvenioRDM
 // Copyright (C) 2025.
+// Copyright (C) 2026 KTH Royal Institute of Technology.
 //
 // Invenio RDM Records is free software; you can redistribute it and/or modify it
 // under the terms of the MIT License; see LICENSE file for more details.
 
-import { i18next } from "@translations/invenio_app_rdm/i18next";
+import { i18next } from "@translations/invenio_rdm_records/i18next";
 import PropTypes from "prop-types";
 import React, { useState } from "react";
 import { Button, Icon, Popup } from "semantic-ui-react";
diff --git a/invenio_rdm_records/oaiserver/services/errors.py b/invenio_rdm_records/oaiserver/services/errors.py
index 5c4a1e2c2..a5fc62f4b 100644
--- a/invenio_rdm_records/oaiserver/services/errors.py
+++ b/invenio_rdm_records/oaiserver/services/errors.py
@@ -2,6 +2,7 @@
 #
 # This file is part of Invenio.
 # Copyright (C) 2022-2023 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # under the terms of the MIT License; see LICENSE file for more details.
@@ -27,9 +28,8 @@ def __init__(self, query_arguments):
         """Initialise error."""
         super().__init__(
             description=_(
-                "A set where {query_arguments} does not exist.".format(
-                    query_arguments=query_arguments
-                )
+                "A set where %(query_arguments)s does not exist.",
+                query_arguments=query_arguments,
             )
         )
 
@@ -39,9 +39,7 @@ class OAIPMHSetIDDoesNotExistError(OAIPMHError):
 
     def __init__(self, id):
         """Initialise error."""
-        super().__init__(
-            description=_("A set with id {id} does not exist.".format(id=id))
-        )
+        super().__init__(description=_("A set with id %(id)s does not exist.", id=id))
 
 
 class OAIPMHSetSpecAlreadyExistsError(OAIPMHError):
@@ -50,7 +48,7 @@ class OAIPMHSetSpecAlreadyExistsError(OAIPMHError):
     def __init__(self, spec):
         """Initialise error."""
         super().__init__(
-            description=_("A set with spec '{spec}' already exists.".format(spec=spec))
+            description=_("A set with spec '%(spec)s' already exists.", spec=spec)
         )
 
 
@@ -60,5 +58,5 @@ class OAIPMHSetNotEditable(OAIPMHError):
     def __init__(self, id):
         """Initialise error."""
         super().__init__(
-            description=_("The set with id {id} is not editable.".format(id=id))
+            description=_("The set with id %(id)s is not editable.", id=id)
         )
diff --git a/invenio_rdm_records/requests/quota_increase.py b/invenio_rdm_records/requests/quota_increase.py
index 60d163bd5..103891973 100644
--- a/invenio_rdm_records/requests/quota_increase.py
+++ b/invenio_rdm_records/requests/quota_increase.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2026 CERN.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -8,6 +9,7 @@
 """Quota increase request."""
 
 from invenio_access.permissions import system_identity
+from invenio_i18n import gettext
 from invenio_i18n import lazy_gettext as _
 from invenio_requests.customizations import actions
 from marshmallow import fields
@@ -22,10 +24,15 @@ class CreateAction(actions.CreateAction):
     def execute(self, identity, uow):
         """Verify request preconditions and create the request."""
         record = self.request.topic.resolve()
-
-        self.request["title"] = _('Quota increase request for "{record_title}"').format(
-            record_title=record.metadata.get("title", "Empty draft title")
-        )
+        record_title = record.metadata.get("title")
+
+        if record_title:
+            self.request["title"] = gettext(
+                'Quota increase request for "%(record_title)s"',
+                record_title=record_title,
+            )
+        else:
+            self.request["title"] = gettext("Quota increase request")
 
         super().execute(identity, uow)
 
diff --git a/invenio_rdm_records/requests/record_deletion.py b/invenio_rdm_records/requests/record_deletion.py
index de42f35d0..8cb4a9d28 100644
--- a/invenio_rdm_records/requests/record_deletion.py
+++ b/invenio_rdm_records/requests/record_deletion.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2025-2026 CERN.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -8,6 +9,7 @@
 """Record deletion request."""
 
 from invenio_access.permissions import system_identity
+from invenio_i18n import gettext
 from invenio_i18n import lazy_gettext as _
 from invenio_notifications.services.uow import NotificationOp
 from invenio_pidstore.errors import PIDDoesNotExistError
@@ -39,8 +41,9 @@ def execute(self, identity, uow):
             )
 
         self._verify_removal_reason()
-        self.request["title"] = _('Deletion request for "{record_title}"').format(
-            record_title=record.metadata["title"]
+        self.request["title"] = gettext(
+            'Deletion request for "%(record_title)s"',
+            record_title=record.metadata["title"],
         )
 
         super().execute(identity, uow)
diff --git a/invenio_rdm_records/secret_links/errors.py b/invenio_rdm_records/secret_links/errors.py
index d9e0d5c18..810764cb2 100644
--- a/invenio_rdm_records/secret_links/errors.py
+++ b/invenio_rdm_records/secret_links/errors.py
@@ -7,6 +7,8 @@
 
 """Errors for secret links."""
 
+from invenio_i18n import gettext as _
+
 
 class SecretLinkError(Exception):
     """Base exception for secret links errors."""
@@ -19,4 +21,9 @@ class InvalidPermissionLevelError(SecretLinkError):
 
     def __init__(self, permission_level):
         """Initialise error."""
-        super().__init__(f"Invalid permission level: {permission_level}")
+        super().__init__(
+            _(
+                "Invalid permission level: %(permission_level)s",
+                permission_level=permission_level,
+            )
+        )
diff --git a/invenio_rdm_records/services/pids/errors.py b/invenio_rdm_records/services/pids/errors.py
index 6b44b677c..472388ac8 100644
--- a/invenio_rdm_records/services/pids/errors.py
+++ b/invenio_rdm_records/services/pids/errors.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 #
 # Copyright (C) 2021-2024 CERN.
-# Copyright (C) 2024 KTH Royal Institute of Technology.
+# Copyright (C) 2024-2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -19,7 +19,7 @@ class PIDSchemeNotSupportedError(RDMRecordsException):
     def __init__(self, schemes):
         """Initialise error."""
         super().__init__(
-            _("No configuration defined for PIDs {schemes}".format(schemes=schemes))
+            _("No configuration defined for PIDs %(schemes)s", schemes=schemes)
         )
 
 
diff --git a/invenio_rdm_records/services/pids/manager.py b/invenio_rdm_records/services/pids/manager.py
index 6206aa70e..f4ed551be 100644
--- a/invenio_rdm_records/services/pids/manager.py
+++ b/invenio_rdm_records/services/pids/manager.py
@@ -83,7 +83,7 @@ def _validate_identifiers(self, pids, errors):
                     errors.append(
                         {
                             "field": f"pids.{scheme}",
-                            "messages": [_("Invalid {scheme}").format(scheme=label)],
+                            "messages": [_("Invalid %(scheme)s", scheme=label)],
                         }
                     )
                 else:
@@ -159,8 +159,8 @@ def create(self, draft, scheme, identifier=None, provider_name=None):
         else:
             if draft.pids.get(scheme):
                 raise ValidationError(
-                    message=_("A PID already exists for type {scheme}").format(
-                        scheme=scheme
+                    message=_(
+                        "A PID already exists for type %(scheme)s", scheme=scheme
                     ),
                     field_name=f"pids.{scheme}",
                 )
@@ -201,7 +201,7 @@ def update(self, record, scheme, url=None):
         pid_attrs = record.pids.get(scheme, None)
         if not pid_attrs:
             raise ValidationError(
-                message=_("PID not found for type {scheme}").format(scheme=scheme),
+                message=_("PID not found for type %(scheme)s", scheme=scheme),
                 field_name="pids",
             )
 
@@ -227,7 +227,7 @@ def register(self, record, scheme, url):
         pid_attrs = record.pids.get(scheme, None)
         if not pid_attrs:
             raise ValidationError(
-                message=_("PID not found for type {scheme}").format(scheme=scheme),
+                message=_("PID not found for type %(scheme)s", scheme=scheme),
                 field_name="pids",
             )
 
diff --git a/invenio_rdm_records/services/pids/providers/base.py b/invenio_rdm_records/services/pids/providers/base.py
index 3d2f01b48..764165ac9 100644
--- a/invenio_rdm_records/services/pids/providers/base.py
+++ b/invenio_rdm_records/services/pids/providers/base.py
@@ -2,7 +2,7 @@
 #
 # Copyright (C) 2021 CERN.
 # Copyright (C) 2021-2024 Graz University of Technology.
-# Copyright (C) 2024 KTH Royal Institute of Technology.
+# Copyright (C) 2024-2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -173,8 +173,10 @@ def validate(self, record, identifier=None, provider=None, **kwargs):
                     {
                         "field": f"pids.{self.pid_type}",
                         "messages": [
-                            _("{pid_type}:{identifier} already exists.").format(
-                                pid_type=self.pid_type, identifier=identifier
+                            _(
+                                "%(pid_type)s:%(identifier)s already exists.",
+                                pid_type=self.pid_type,
+                                identifier=identifier,
                             )
                         ],
                     }
diff --git a/invenio_rdm_records/services/pids/providers/external.py b/invenio_rdm_records/services/pids/providers/external.py
index 975e277ea..40fb59937 100644
--- a/invenio_rdm_records/services/pids/providers/external.py
+++ b/invenio_rdm_records/services/pids/providers/external.py
@@ -3,6 +3,7 @@
 # Copyright (C) 2021 CERN.
 # Copyright (C) 2023 Northwestern University.
 # Copyright (C) 2023-2024 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -42,8 +43,10 @@ def __call__(self, record, identifier, provider, errors):
             if identifier.startswith(p):
                 errors.append(
                     _(
-                        "The prefix '{prefix}' is managed by {sitename}. Please supply an external DOI or select 'No' to have a DOI generated for you."
-                    ).format(prefix=p, sitename=current_app.config["THEME_SITENAME"])
+                        "The prefix '%(prefix)s' is managed by %(sitename)s. Please supply an external DOI or select 'No' to have a DOI generated for you.",
+                        prefix=p,
+                        sitename=current_app.config["THEME_SITENAME"],
+                    )
                 )
                 # Bail early
                 return
@@ -88,7 +91,7 @@ def validate(self, record, identifier=None, provider=None, client=None, **kwargs
         if not identifier:
             self._insert_pid_type_error_msg(
                 errors,
-                _("Missing {scheme} for required field.").format(scheme=self.label),
+                _("Missing %(scheme)s for required field.", scheme=self.label),
             )
 
         for v in self._validators:
diff --git a/invenio_rdm_records/services/schemas/access.py b/invenio_rdm_records/services/schemas/access.py
index 9422c94b6..0cd985475 100644
--- a/invenio_rdm_records/services/schemas/access.py
+++ b/invenio_rdm_records/services/schemas/access.py
@@ -4,6 +4,7 @@
 # Copyright (C) 2020-2021 Northwestern University.
 # Copyright (C) 2021 TU Wien.
 # Copyright (C) 2021-2025 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -64,8 +65,9 @@ def validate_protection_value(self, value, field_name):
         """Check that the protection value is valid."""
         if value not in ["public", "restricted"]:
             raise ValidationError(
-                _("'{field_name}' must be either 'public' or 'restricted'").format(
-                    field_name=field_name
+                _(
+                    "'%(field_name)s' must be either 'public' or 'restricted'",
+                    field_name=field_name,
                 ),
                 "record",
             )
diff --git a/invenio_rdm_records/services/schemas/community_records.py b/invenio_rdm_records/services/schemas/community_records.py
index ed875b065..10aea2118 100644
--- a/invenio_rdm_records/services/schemas/community_records.py
+++ b/invenio_rdm_records/services/schemas/community_records.py
@@ -2,6 +2,7 @@
 #
 # Copyright (C) 2023 CERN.
 # Copyright (C) 2025 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -33,9 +34,8 @@ def validate_records(self, value):
         if max_number < len(value):
             raise ValidationError(
                 _(
-                    "Too many records passed, {max_number} max allowed.".format(
-                        max_number=max_number
-                    )
+                    "Too many records passed, %(max_number)s max allowed.",
+                    max_number=max_number,
                 )
             )
 
@@ -50,5 +50,5 @@ def validate_records(self, value):
 
         if duplicated:
             raise ValidationError(
-                _("Duplicated records {rec_ids}.".format(rec_ids=duplicated))
+                _("Duplicated records %(rec_ids)s.", rec_ids=duplicated)
             )
diff --git a/invenio_rdm_records/services/schemas/metadata.py b/invenio_rdm_records/services/schemas/metadata.py
index 8cef76026..f4d1b1bde 100644
--- a/invenio_rdm_records/services/schemas/metadata.py
+++ b/invenio_rdm_records/services/schemas/metadata.py
@@ -3,6 +3,7 @@
 # Copyright (C) 2020-2025 CERN.
 # Copyright (C) 2020 Northwestern University.
 # Copyright (C) 2021-2025 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -90,11 +91,11 @@ class PersonOrOrganizationSchema(Schema):
         required=True,
         validate=validate.OneOf(
             choices=NAMES,
-            error=_("Invalid value. Choose one of {NAMES}.").format(NAMES=NAMES),
+            error=_("Invalid value. Choose one of %(names)s.", names=NAMES),
         ),
         error_messages={
             # [] needed to mirror error message above
-            "required": [_("Invalid value. Choose one of {NAMES}.").format(NAMES=NAMES)]
+            "required": [_("Invalid value. Choose one of %(names)s.", names=NAMES)]
         },
     )
     name = SanitizedUnicode()
diff --git a/invenio_rdm_records/services/schemas/parent/__init__.py b/invenio_rdm_records/services/schemas/parent/__init__.py
index 1211d9783..da01c868b 100644
--- a/invenio_rdm_records/services/schemas/parent/__init__.py
+++ b/invenio_rdm_records/services/schemas/parent/__init__.py
@@ -2,6 +2,7 @@
 #
 # Copyright (C) 2021 TU Wien.
 # Copyright (C) 2021-2024 CERN.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -25,7 +26,7 @@ def validate_scheme(scheme):
     """Validate a PID scheme."""
     if scheme not in current_app.config["RDM_PARENT_PERSISTENT_IDENTIFIERS"]:
         raise ValidationError(
-            _("Invalid persistent identifier scheme {scheme}.".format(scheme=scheme))
+            _("Invalid persistent identifier scheme %(scheme)s.", scheme=scheme)
         )
 
 
diff --git a/invenio_rdm_records/services/schemas/record_communities.py b/invenio_rdm_records/services/schemas/record_communities.py
index c64df55bf..da34ec1ba 100644
--- a/invenio_rdm_records/services/schemas/record_communities.py
+++ b/invenio_rdm_records/services/schemas/record_communities.py
@@ -2,6 +2,7 @@
 #
 # Copyright (C) 2023 CERN.
 # Copyright (C) 2025 Graz University of Technology.
+# Copyright (C) 2026 KTH Royal Institute of Technology.
 #
 # Invenio-RDM-Records is free software; you can redistribute it and/or modify
 # it under the terms of the MIT License; see LICENSE file for more details.
@@ -36,9 +37,8 @@ def validate_communities(self, value):
         if max_number < len(value):
             raise ValidationError(
                 _(
-                    "Too many communities passed, {max_number} max allowed.".format(
-                        max_number=max_number
-                    )
+                    "Too many communities passed, %(max_number)s max allowed.",
+                    max_number=max_number,
                 )
             )
 
@@ -53,5 +53,5 @@ def validate_communities(self, value):
 
         if duplicated:
             raise ValidationError(
-                _("Duplicated communities {com_ids}.".format(com_ids=duplicated))
+                _("Duplicated communities %(com_ids)s.", com_ids=duplicated)
             )