resolved regex limit problem

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

@@ -31,7 +31,7 @@ public class BillerDetails {
     @Size(min = 14, max = 14, message = "Biller ID must be 14 characters long")
     private String billerId;
 
-    @Column(name = "biller_name", nullable = false)
+    @Column(name = "biller_name")
     @NotBlank(message = "Biller name cannot be blank")
     private String billerName;
 
@@ -42,11 +42,11 @@ public class BillerDetails {
     @NotBlank(message = "Biller category name cannot be blank")
     private String billerCategoryName;
 
-    @Column(name = "biller_mode", nullable = false)
+    @Column(name = "biller_mode")
     @NotBlank(message = "Biller mode cannot be blank")
     private String billerMode;
 
-    @Column(name = "biller_accepts_adhoc", nullable = false)
+    @Column(name = "biller_accepts_adhoc")
     private boolean billerAcceptsAdhoc;
 
     @Column(name = "parent_biller")
@@ -67,15 +67,12 @@ public class BillerDetails {
     private String fetchRequirement;
 
     @Column(name = "payment_amount_exactness")
-    @NotBlank(message = "Payment amount exactness is required")
     private String paymentAmountExactness;
 
     @Column(name = "support_bill_validation")
-    @NotBlank(message = "Support bill validation is required")
     private String supportBillValidation;
 
     @Column(name = "biller_effctv_from")
-    @NotBlank(message = "Effective from date is required")
     private String billerEffctvFrom;
 
     @Column(name = "biller_effctv_to")