diff --git a/app/commands/decidim/plans/admin/update_sections.rb b/app/commands/decidim/plans/admin/update_sections.rb
index 8b89013a..3012b77f 100644
--- a/app/commands/decidim/plans/admin/update_sections.rb
+++ b/app/commands/decidim/plans/admin/update_sections.rb
@@ -40,6 +40,7 @@ def update_sections
                 handle: form_section.handle,
                 body: form_section.body_text,
                 help: form_section.help,
+                error_text: form_section.error_text,
                 information_label: form_section.information_label,
                 information: form_section.information,
                 mandatory: form_section.mandatory,
diff --git a/app/forms/decidim/plans/admin/section_form.rb b/app/forms/decidim/plans/admin/section_form.rb
index a8d93a86..eb471cf9 100644
--- a/app/forms/decidim/plans/admin/section_form.rb
+++ b/app/forms/decidim/plans/admin/section_form.rb
@@ -14,6 +14,7 @@ class SectionForm < Decidim::Form
         translatable_attribute :body, String
         translatable_attribute :body_rich, String
         translatable_attribute :help, String
+        translatable_attribute :error_text, String
         translatable_attribute :information_label, String
         translatable_attribute :information, String
         attribute :visible_form, Boolean, default: true
diff --git a/app/views/decidim/plans/admin/sections/_section.html.erb b/app/views/decidim/plans/admin/sections/_section.html.erb
index 4c179738..73704cc8 100644
--- a/app/views/decidim/plans/admin/sections/_section.html.erb
+++ b/app/views/decidim/plans/admin/sections/_section.html.erb
@@ -91,6 +91,15 @@
         ) %>
       </div>
 
+      <div class="row column" data-section-type-inverse="content">
+        <%= form.translated(
+            :text_field,
+            :error_text,
+            tabs_id: id,
+            label: t(".error_text")
+        ) %>
+      </div>
+
       <div class="row column" data-section-type-inverse="content">
         <%= form.translated(
             :text_field,
diff --git a/config/locales/en.yml b/config/locales/en.yml
index aa69ba90..d84cbf1c 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -170,6 +170,7 @@ en:
             attachments_input_type: Attachments input type
             body: Body
             down: Down
+            error_text: Text for invalid input
             handle: Handle
             help: Help
             information: Information
diff --git a/config/locales/fi.yml b/config/locales/fi.yml
index 4eef1541..4735bb11 100644
--- a/config/locales/fi.yml
+++ b/config/locales/fi.yml
@@ -170,6 +170,7 @@ fi:
             attachments_input_type: Liitteiden syöttökentän tyyppi
             body: Runkoteksti
             down: Alas
+            error_text: Virheellisen syötteen teksti
             handle: Tunniste
             help: Ohjeteksti
             information: Tietoa-osio
diff --git a/config/locales/sv.yml b/config/locales/sv.yml
index a5c440e8..add8f6fb 100644
--- a/config/locales/sv.yml
+++ b/config/locales/sv.yml
@@ -170,6 +170,7 @@ sv:
             attachments_input_type: Inmatningsfält typ av bilaga
             body: Brödtext
             down: Ner
+            error_text: Text för ogiltig inmatning
             handle: Identifierare
             help: Hjälp
             information: Information
diff --git a/db/migrate/20240502083422_add_error_text_to_plan_sections.rb b/db/migrate/20240502083422_add_error_text_to_plan_sections.rb
new file mode 100644
index 00000000..4d7a2bc1
--- /dev/null
+++ b/db/migrate/20240502083422_add_error_text_to_plan_sections.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddErrorTextToPlanSections < ActiveRecord::Migration[6.1]
+  def change
+    add_column :decidim_plans_sections, :error_text, :jsonb
+  end
+end