diff --git a/plugin/kintone-addins/src/actions/validation-fullwidth.ts b/plugin/kintone-addins/src/actions/validation-fullwidth.ts
index e4448f0..ad683a3 100644
--- a/plugin/kintone-addins/src/actions/validation-fullwidth.ts
+++ b/plugin/kintone-addins/src/actions/validation-fullwidth.ts
@@ -43,6 +43,9 @@ export class FullWidthAction implements IAction{
             this.props = actionNode.ActionValue as FullWidthProps;
             //条件式の計算結果を取得
             const record = event.record;
+            if(!(this.props.field.code in record)){
+                throw new Error(`フィールド「${this.props.field.code}」が見つかりません。`);
+            }
             const value = record[this.props.field.code]?.value;
             //条件分岐
             //未入力時は何も処理をせず終了
diff --git a/plugin/kintone-addins/src/actions/validation-halfwidth.ts b/plugin/kintone-addins/src/actions/validation-halfwidth.ts
index d8057a4..3321891 100644
--- a/plugin/kintone-addins/src/actions/validation-halfwidth.ts
+++ b/plugin/kintone-addins/src/actions/validation-halfwidth.ts
@@ -43,6 +43,9 @@ export class HalfWidthAction implements IAction{
             this.props = actionNode.ActionValue as HalfWidthProps;
             //条件式の計算結果を取得
             const record = event.record;
+            if(!(this.props.field.code in record)){
+                throw new Error(`フィールド「${this.props.field.code}」が見つかりません。`);
+            }
             const value = record[this.props.field.code]?.value;
             //条件分岐
             //未入力時は何も処理をせず終了