fixed the biller Id Saving problem added 404 not found url

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

@@ -0,0 +1,71 @@
+package com.billpaymentservice.bbps.entites;
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+@Entity
+@Table(name = "complaint_details")
+@Getter
+@Setter
+@ToString
+public class ComplaintDetails {
+
+    @Id
+    @Column(name = "complaint_id", nullable = false, unique = true)
+    private String complaintId;   // Primary key (UUID from BBPS API)
+    
+    @Column(name = "req_id")
+    private String reqId;
+    
+    @Column(name = "txn_id")
+    private String txnId;
+
+    @Column(name = "complaint_descr")
+    private String complaintDescr;
+
+    @Column(name = "complaint_dispos")
+    private String complaintDispos;
+
+    @Column(name = "complaint_type")
+    private String complaintType;
+
+    @Column(name = "bank_txn_id")
+    private String bankTxnId;
+
+    @Column(name = "txn_npci_id")
+    private String txnNpciId;
+
+    @Column(name = "assigned_to")
+    private String assignedTo;
+
+    @Column(name = "complaint_npci_id")
+    private String complaintNpciId;
+
+    @Column(name = "complaint_raised_from")
+    private String complaintRaisedFrom;
+
+    @Column(name = "user_id")
+    private String userId;
+
+    @Column(name = "status")
+    private String status;
+
+    @Column(name = "ref_id")
+    private String refId;
+
+    @Column(name = "estimated_tat")
+    private String estimated_TAT;
+
+    @Column(name = "creation_date")
+    private String creationDate;
+
+    @Column(name = "modified_date")
+    private String modifiedDate;
+
+    @Column(name = "created_epoch_date")
+    private Long createdEpochDate;
+
+    @Column(name = "modified_epoch_date")
+    private Long modifiedEpochDate;
+}

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

@@ -2,10 +2,13 @@ package com.billpaymentservice.bbps.entites;
 
 
 import java.util.List;
+import jakarta.persistence.ForeignKey;
+
 
 import jakarta.persistence.CascadeType;
 import jakarta.persistence.CollectionTable;
 import jakarta.persistence.Column;
+import jakarta.persistence.ConstraintMode;
 import jakarta.persistence.ElementCollection;
 import jakarta.persistence.Entity;
 import jakarta.persistence.FetchType;
@@ -36,10 +39,11 @@ public class Group {
     @Column(name = "input")
     private String input;
 
-    // Example: "Admission No/Application No/GR No" → stored as multiple params
-    @ElementCollection
-    @CollectionTable(name = "group_params", joinColumns = @JoinColumn(name = "group_id"))
-    @Column(name = "param_name")
+    @CollectionTable(
+    	    name = "group_params",
+    	    joinColumns = @JoinColumn(name = "group_id"),
+    	    foreignKey = @ForeignKey(value = ConstraintMode.NO_CONSTRAINT)
+    	)
     private List<String> params;
 
     // 🔗 Parent group relationship (for nested groups)