diff -u b/core/modules/text/config/schema/text.schema.yml b/core/modules/text/config/schema/text.schema.yml
--- b/core/modules/text/config/schema/text.schema.yml
+++ b/core/modules/text/config/schema/text.schema.yml
@@ -109,8 +109,6 @@
           type: string
           label: 'Text format'
 
-
-
 field_widget.text_textfield.settings:
   type: mapping
   label: 'Text field widget settings'
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/field_sql_storage/config/schema/field_sql_storage.schema.yml
@@ -0,0 +1,7 @@
+# Schema for configuration files of the Field SQL Storage module.
+
+field_storage.field_sql_storage.settings:
+  type: sequence
+  label: 'Settings'
+  sequence:
+    - type: string