cretaed entities for BillerDetail

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

@@ -0,0 +1,39 @@
+package com.billpaymentservice.bbps.entites;
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import lombok.Getter;
+import lombok.Setter;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "payment_channel")
+public class PaymentChannel {
+
+    @Id
+    @Column(name = "payment_channel_limit_id")
+    @JsonProperty("paymentChannelLimitId")  // 👈 Map JSON field to this property
+    private String id;  // Primary key (manual, not auto-generated)
+
+    @NotBlank(message = "Payment channel is required")
+    @Column(name = "payment_channel", nullable = false)
+    private String paymentChannel;
+
+    @Min(value = 0, message = "Max limit cannot be negative")
+    @Column(name = "max_limit")
+    private long maxLimit;
+
+    @Min(value = 0, message = "Min limit cannot be negative")
+    @Column(name = "min_limit")
+    private long minLimit;
+
+    @Column(name = "support_pending_status")
+    private String supportPendingStatus;
+
+    // 🔗 Many PaymentChannels belong to one Biller
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "biller_id")
+    private BillerDetails biller;
+}