diff --git a/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.html b/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.html
index 8697b5004..3c7d65a08 100755
--- a/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.html
+++ b/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.html
@@ -11,7 +11,7 @@
                <div *ngFor="let master of pdMasterData" class="ml-xs mr-xs pt-1"   fxFlex="55" style="text-align:right;" >
                   <button  *ngIf="master.pd_type_name && currentPDStatus!=pdStatusCheck.DRAFT && currentPDStatus!=pdStatusCheck.COMPLETED && currentPDStatus!=pdStatusCheck.QC_COMPLETED" mat-raised-button  mat-icon-button class="mr-1 mb-1 hover-icon" type="button" matTooltip="Allocate" matTooltipPosition="above" (click)="pdAllocationTo(master)"><mat-icon>verified_user</mat-icon></button>
                       <button *ngIf="master.pd_type_name && currentPDStatus!=pdStatusCheck.DRAFT && currentPDStatus!=pdStatusCheck.COMPLETED && currentPDStatus!=pdStatusCheck.QC_COMPLETED" mat-raised-button mat-icon-button class="mr-1 mb-1 hover-icon" type="button" matTooltip="Schedule" matTooltipPosition="above" (click)="scheduleDetails(master)"><mat-icon>schedule</mat-icon></button>
-                      <button *ngIf="master.pd_type_name && currentPDStatus!=pdStatusCheck.DRAFT && currentPDStatus!=pdStatusCheck.TRIGGERED && currentPDStatus!=pdStatusCheck.DRAFT" mat-raised-button mat-icon-button class="mr-1 mb-1 hover-icon" type="button" matTooltip="Discussion" matTooltipPosition="above" (click)="getPDStart(viewID)"><mat-icon>question_answer</mat-icon></button>
+                      <button *ngIf="master.pd_type_name && currentPDStatus!=pdStatusCheck.DRAFT && currentPDStatus!=pdStatusCheck.TRIGGERED && currentPDStatus!=pdStatusCheck.DRAFT && enableStartPD" mat-raised-button mat-icon-button class="mr-1 mb-1 hover-icon" type="button" matTooltip="Discussion" matTooltipPosition="above" (click)="getPDStart(viewID)"><mat-icon>question_answer</mat-icon></button>
 
                       <button *ngIf="master.pd_type_name && currentPDStatus===pdStatusCheck.QC_COMPLETED" mat-raised-button mat-icon-button class="mr-1 mb-1 hover-icon" type="button" matTooltip="PD Report" matTooltipPosition="above" (click)="getPDIDReport(viewID)"><mat-icon>ballot</mat-icon></button>
 
diff --git a/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.ts b/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.ts
index bcf27d053..64fd67858 100755
--- a/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.ts
+++ b/ng6-seed/src/app/personal-discussion/manage-pd/list-pd/view-pd/view-pd.component.ts
@@ -60,16 +60,7 @@ export class ViewPdComponent implements OnInit, OnDestroy {
     this.route.params.subscribe(params => {
       this.viewID = params['pdid'];
       });
-    let courrentDateTime: string = this.pipe.transform(new Date(), 'yyyy-MM-dd HH:mm');   
-    let scheduledDateTime: string="2018-12-03 08:20";
-    let diffInMs: number = Date.parse(courrentDateTime) - Date.parse(scheduledDateTime);
-    let diffInHours: number = Math.floor(diffInMs / 1000 / 60 / 60);
-    if(diffInHours>=-4){
-      this.enableStartPD=true;
-    }
-    else {
-      this.enableStartPD=false;
-    }
+    
     
     this.viewPdDetails(this.viewID);
   }
@@ -84,6 +75,22 @@ export class ViewPdComponent implements OnInit, OnDestroy {
        //this.applicantPDLogsData= data.records.pd_logs.master;
        this.currentPDStatus = data.records.pd_master_details[0].pd_status;
        this.pdAdditionalReqData = data.records.pd_additional_requirements;
+        // enable pd start time  
+      if(data.records.pd_master_details[0].scheduled_on_for_validation){
+        let courrentDateTime: string = this.pipe.transform(new Date(), 'yyyy-MM-dd HH:mm');   
+      let scheduledDateTime: string=data.records.pd_master_details[0].scheduled_on_for_validation;
+      let diffInMs: number = Date.parse(courrentDateTime) - Date.parse(scheduledDateTime);
+      let diffInHours: number = Math.floor(diffInMs / 1000 / 60 / 60);
+      if(diffInHours>=-4){
+        this.enableStartPD=true;
+      }
+      else {
+        this.enableStartPD=false;
+      }
+      } 
+      else {
+        this.enableStartPD=false;
+      }
       }
 }, error => this.errorMessage = <any> error);
   }