Issue #3337493 by lamp5: Schema for field_settings and storage is missing

https://www.drupal.org/project/reference_value_pair/issues/3337493

config/schema/reference_value_pair.schema.yml

@@ -39,3 +39,23 @@ field.formatter.settings.reference_value_formatter:
     invalid_reference_label:
       type: string
       label: 'Invalid reference label'
+
+field.field_settings.reference_value_pair:
+  type: mapping
+  mapping:
+    handler:
+      type: string
+    handler_settings:
+      type: entity_reference_selection.default
+
+field.storage_settings.reference_value_pair:
+  type: mapping
+  mapping:
+    max_length:
+      type: integer
+    is_ascii:
+      type: boolean
+    case_sensitive:
+      type: boolean
+    target_type:
+      type: string
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