improved code quality and tested with test data

src/main/java/com/billpaymentservice/bbps/entites/BillValidation.java

@@ -37,8 +37,8 @@ public class BillValidation {
     @Column(name = "biller_response", columnDefinition = "TEXT")
     private String billerResponse;
 
-    @Column(name = "additional_info", columnDefinition = "TEXT")
-    private  String additionalInfo;
+    @OneToMany(mappedBy = "bill", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
+    private List<AdditionalInfoBillValidate> additionalInfo;
 
     // 👇 Proper nested customer params (OneToMany)
     @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "bill")

src/main/java/com/billpaymentservice/bbps/entites/BillerAdditionalInfoPayment.java

@@ -13,7 +13,7 @@ import lombok.Getter;
 import lombok.Setter;
 @Getter
 @Setter
-@Table(name = "biller_additional_additional_info_payment")
+@Table(name = "biller_additional_info_payment")
 @Entity
 public class BillerAdditionalInfoPayment {
 	     @Id

src/main/java/com/billpaymentservice/bbps/entites/BillerDetails.java

@@ -29,7 +29,8 @@ import lombok.ToString;
 	    "billerAdditionalInfos",
 	    "interchangeFeeConves",
 	    "interchangeFees",
-	    "billerPlanResponseParams"
+	    "billerPlanResponseParams",
+	    "billerAdditionalInfoPayments"
 	})
 
 @Table(name = "biller_details")
@@ -151,11 +152,9 @@ public class BillerDetails {
     @OneToMany(mappedBy = "biller", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<AdditionalInfo> billerAdditionalInfos;
 
-	
-	/*
-		 * OneToMany(mappedBy = "biller", cascade = CascadeType.ALL, orphanRemoval
-		 * =true) private List<AdditionalInfo> billerAdditionalInfoPayments;
-		 */
+    @OneToMany(mappedBy = "biller", cascade = CascadeType.ALL, orphanRemoval=true) 
+    private List<BillerAdditionalInfoPayment> billerAdditionalInfoPayments;
+		 
 	 
     @OneToMany(mappedBy = "biller", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<InterchangeFeeConf> interchangeFeeConves;