diff --git a/src/main/java/com/eactive/apim/portal/apprequest/entity/AppRequest.java b/src/main/java/com/eactive/apim/portal/apprequest/entity/AppRequest.java
index f95caf9..0150efe 100644
--- a/src/main/java/com/eactive/apim/portal/apprequest/entity/AppRequest.java
+++ b/src/main/java/com/eactive/apim/portal/apprequest/entity/AppRequest.java
@@ -12,6 +12,8 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.CreationTimestamp;
 import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
 
 @Data
 @EqualsAndHashCode
@@ -27,7 +29,8 @@ public class AppRequest implements com.eactive.eai.data.Data {
     private String id;
 
     @ManyToOne
-    @JoinColumn(name = "org_id")
+    @JoinColumn(name = "org_id", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     private PortalOrg org;
 
     @Enumerated(EnumType.STRING)
@@ -37,7 +40,8 @@ public class AppRequest implements com.eactive.eai.data.Data {
     private AppRequestType type;
 
     @OneToOne
-    @JoinColumn(name = "approval_id")
+    @JoinColumn(name = "approval_id", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     private Approval approval;
 
     @Column(name = "api_list")
diff --git a/src/main/java/com/eactive/apim/portal/approval/entity/Approval.java b/src/main/java/com/eactive/apim/portal/approval/entity/Approval.java
index 2a2bb72..0ddfc7d 100644
--- a/src/main/java/com/eactive/apim/portal/approval/entity/Approval.java
+++ b/src/main/java/com/eactive/apim/portal/approval/entity/Approval.java
@@ -12,6 +12,7 @@ import org.hibernate.annotations.*;
 
 import javax.persistence.CascadeType;
 import javax.persistence.Entity;
+import javax.persistence.ForeignKey;
 import javax.persistence.Table;
 import javax.persistence.*;
 import javax.validation.constraints.NotNull;
@@ -50,9 +51,9 @@ public class Approval implements Serializable, com.eactive.eai.data.Data {
     @Column(name = "target_id", nullable = false)
     private String targetId;  //승인하는 대상 객체의 ID
 
-    @NotNull
     @ManyToOne
-    @JoinColumn(name = "REQUESTER_ID", nullable = false)
+    @JoinColumn(name = "REQUESTER_ID", nullable = false, foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     private PortalUser requester;
 
     @OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "approval")
diff --git a/src/main/java/com/eactive/apim/portal/portaluser/entity/PortalUser.java b/src/main/java/com/eactive/apim/portal/portaluser/entity/PortalUser.java
index 74b8715..7982593 100644
--- a/src/main/java/com/eactive/apim/portal/portaluser/entity/PortalUser.java
+++ b/src/main/java/com/eactive/apim/portal/portaluser/entity/PortalUser.java
@@ -12,6 +12,8 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Comment;
 import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
@@ -60,6 +62,7 @@ public class PortalUser extends Auditable implements Serializable, com.eactive.e
 
     @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "org_id", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     private PortalOrg portalOrg;
 
     @Enumerated(EnumType.STRING)
diff --git a/src/main/java/com/eactive/apim/portal/qna/entity/Inquiry.java b/src/main/java/com/eactive/apim/portal/qna/entity/Inquiry.java
index 69111b6..e2265b5 100644
--- a/src/main/java/com/eactive/apim/portal/qna/entity/Inquiry.java
+++ b/src/main/java/com/eactive/apim/portal/qna/entity/Inquiry.java
@@ -8,6 +8,8 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import lombok.ToString;
 import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
 
 import javax.persistence.*;
 import java.time.LocalDateTime;
@@ -55,7 +57,8 @@ public class Inquiry extends Auditable {
      * 문의자
      */
     @ManyToOne
-    @JoinColumn(name = "INQUIRER_ID")
+    @JoinColumn(name = "INQUIRER_ID", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     private PortalUser inquirer;
 
     /**
diff --git a/src/main/java/com/eactive/apim/portal/template/entity/MessageRequest.java b/src/main/java/com/eactive/apim/portal/template/entity/MessageRequest.java
index b4529b5..031f0e9 100644
--- a/src/main/java/com/eactive/apim/portal/template/entity/MessageRequest.java
+++ b/src/main/java/com/eactive/apim/portal/template/entity/MessageRequest.java
@@ -9,6 +9,8 @@ import lombok.EqualsAndHashCode;
 import lombok.ToString;
 import org.hibernate.annotations.Comment;
 import org.hibernate.annotations.GenericGenerator;
+import org.hibernate.annotations.NotFound;
+import org.hibernate.annotations.NotFoundAction;
 
 import javax.persistence.*;
 import java.io.Serializable;
@@ -59,6 +61,7 @@ public class MessageRequest implements Serializable {
 
     @ManyToOne(fetch = FetchType.EAGER)
     @JoinColumn(name = "user_id", foreignKey = @ForeignKey(ConstraintMode.NO_CONSTRAINT))
+    @NotFound(action = NotFoundAction.IGNORE)
     @Comment("발송 대상 사용자")
     private PortalUser user;