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Aam MAam M 

how to refres

I have 3 mandatory fields in my VF page. 2 picklist mandatory field and one lookup,,
For those 2 picklists dependent picklists are there, whenever we change the picklist values, other dependent picklist value should Come,
But there are 3 mandatory fields so whenever i select one picklist value it shows error for all required fields to enter the value.,

please look into it,  & do the needful!

User-added image
Waqar Hussain SFWaqar Hussain SF
user <apex:form html-novalidate>
Or 
immediate="true"
on picklist field
Aam MAam M
it doesn't work bro "immediate=true" ..  Please have a review & do the needful
<apex:page standardController="Expense_Line_Item__c" extensions="SaveAndNew" sidebar="false"  showHeader="true" >
  <style> span.dateFormat { display:none; } </style>
  <style>
        .text {text-align: right; font-family:Times New Roman ; font-size:13px; font-style:Bold; color:black;}
         
        .pbHeader{
            color:#01375B;
            width:100%;
            font-size:200%;
            font-family:;
        }
        .pbsHeader1
            color:#01375B;
            width:100%;
            font-size:200%;
            font-family;;
        }
   
     </style>  
 <apex:slds />  
 <div class="slds-scope">   
  
    <apex:form id="TR">
     
       
       
        <apex:pageBlock mode="mainDetail" tabStyle="Account" > 
        <apex:facet name="header"></apex:facet>
            
            
            <apex:pageBlockSection columns="2" title=" " collapsible="false">
                    
                
                
                  <apex:pageBlockSectionItem > 
                        <apex:outputLabel Value="Expense Report Id" styleClass="text" />
                        <apex:inputField value="{!Expense_Line_Item__c.Expense__c}" style="width:150px;" />
                   </apex:pageBlockSectionItem>
                   <apex:pageBlockSectionItem >
                        <apex:outputLabel Value="Expense Line Item Description" styleClass="text" /> 
                        <apex:inputField value="{!Expense_Line_Item__c.Name}"  style="width:150px;" />
                  </apex:pageBlockSectionItem>
                            <apex:pageBlockSectionItem >
                            <apex:outputLabel Value="Date" styleClass="text" />
                            <apex:inputField value="{!Expense_Line_Item__c.Date__c}"  style="width:150px;" />
                            </apex:pageBlockSectionItem>
                            <apex:pageBlockSectionItem >
                            <apex:outputLabel Value="Bill Available" styleClass="text" /> 
                            <apex:inputField value="{!Expense_Line_Item__c.Bill_Available__c}"  />
                            </apex:pageBlockSectionItem>
                  
                 <!-- <apex:pageBlockSectionItem >
                 
                        <apex:outputLabel Value="Date" styleClass="text" />
                        <apex:inputField value="{!Expense_Line_Item__c.Date__c}" style="width:150px;" />                   
                  </apex:pageBlockSectionItem>-->
                    
                  <!--<apex:pageBlockSectionItem >
                        <apex:outputLabel Value="Expense Line Item Description" styleClass="text" /> 
                        <apex:inputField value="{!Expense_Line_Item__c.Name}" style="width:150px;" />
                  </apex:pageBlockSectionItem>-->
                    
                           
                    
                  <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Merchant" styleClass="text" />
                         <apex:inputField value="{!Expense_Line_Item__c.Merchant__c}" style="width:150px;" />
                  </apex:pageBlockSectionItem>
                    
                  <apex:pageBlockSectionItem >
                         <apex:outputLabel Value=" Merchant GST Number" styleClass="text" />
                         <apex:inputField value="{!Expense_Line_Item__c.Merchant_GST_Number__c}" style="width:150px;"/>
                  </apex:pageBlockSectionItem>
                    
                  </apex:pageBlockSection>
                
                  <apex:pageBlockSection columns="2" title=" " collapsible="false">
                   
                      <h1 style="font-size:140%;font-style: ">Expense Details</h1>
                      <apex:pageBlockSectionItem >
                    <apex:inputField rendered="false" />
                    <apex:inputField rendered="false" />

                </apex:pageBlockSectionItem>
                  <apex:pageBlockSectionItem >  
                         <apex:outputLabel Value="Approved" styleClass="text" />  
                         <apex:inputField value="{!Expense_Line_Item__c.Approved__c}" />
                  </apex:pageBlockSectionItem>    
                  
                  <apex:pageBlockSectionItem > 
                         <apex:outputLabel Value="Amount" styleClass="text" />     
                         <apex:inputField value="{!Expense_Line_Item__c.Amount__c}" required="True" style="width:150px;" />
                  </apex:pageBlockSectionItem>
                    
                 <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Payment Type" styleClass="text" /> 
                         <apex:inputField value="{!Expense_Line_Item__c.Payment_Type__c}" style="width:150px;"  />
                  </apex:pageBlockSectionItem> 
                  
                 
                 
                 <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Cost Head" styleClass="text" />   
                         <apex:inputField value="{!Expense_Line_Item__c.Cost_Head__c}" style="width:150px;" required="true" >
                         <apex:actionSupport event="onchange" rerender="TR" />
                         </apex:inputField>
                  </apex:pageBlockSectionItem>
                    
                  <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Select Campaign" styleClass="text" />   
                         <apex:inputField value="{!Expense_Line_Item__c.Related_to_Campaign__c}" style="width:150px;" rendered="{!IF( Expense_Line_Item__c.Cost_Head__c== 'Campaign',true,false  )}" />
                  </apex:pageBlockSectionItem>
                     
                  <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Select Opportunity" styleClass="text" /> 
                         <apex:inputField value="{!Expense_Line_Item__c.Related_to_Opportunity__c}" style="width:150px;" rendered="{!IF( Expense_Line_Item__c.Cost_Head__c== 'Opportunity',true,false  )}" />
                  </apex:pageBlockSectionItem>
                    
                  <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Select Project" styleClass="text" /> 
                         <apex:inputField value="{!Expense_Line_Item__c.Project__c}" style="width:150px;" rendered="{!IF( Expense_Line_Item__c.Cost_Head__c== 'Project',true,false  )}" />                                                            
                  </apex:pageBlockSectionItem>
                      
                  
                    <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Expense Head" styleClass="text" /> 
                         <apex:inputField value="{!Expense_Line_Item__c.Expense_Head__c}" style="width:150px;" required="true" >
                         <apex:actionSupport event="onchange" rerender="TR" />  
                         </apex:inputField>
                  </apex:pageBlockSectionItem>
                     
                        
                  <!-- <apex:outputPanel id="ren">-->
                    
                  
                  <!-- </apex:outputPanel> -->
                  <!--  <apex:pageBlockTable value="{!Expense_Line_Item__c}" var="item" columns="2" >
                  <apex:column> 
                  <apex:outputLabel >  
                  <apex:inputField label="City"  value="{!item.City__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false )}" /></apex:outputLabel>
                  <apex:inputField label="Mode of travel" value="{!item.Mode_Of_Travel__c}" rendered="{!IF(Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" />
                  <apex:inputField label="Location from" value="{!item.Location_From__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" /> 
                  <apex:inputField label="Location to" value="{!item.Location_To__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" /> </apex:column>
                  <apex:column>       
                  <apex:inputField value="{!item.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Food',true,false  )}" /> </apex:column>
                  <apex:column>           
                  <apex:inputField value="{!item.Sub_Expense__c}" rendered="{!IF(Expense_Line_Item__c.Expense_Head__c== 'Entertainment',true,false  )}" /> </apex:column>
                  <apex:column>          
                  <apex:inputField value="{!item.Sub_Expense__c}" rendered="{!IF(Expense_Line_Item__c.Expense_Head__c== 'Lodging',true,false  )}" /> </apex:column>
                  <apex:column> <apex:inputField value="{!item.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Others',true,false  )}" /> </apex:column>
                                                              
                  </apex:pageBlockTable>-->
              
               
                  <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c == 'Travel',true,false )}" >
                         <apex:outputLabel Value="City" styleClass="text" />
                         <apex:inputField value="{!Expense_Line_Item__c.City__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false )}" style="width:150px;" />
                  </apex:pageBlockSectionItem>
                   
                  <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false )}" >
                         <apex:outputLabel Value="Mode Of Travel" styleClass="text" />
                         <apex:inputField value="{!Expense_Line_Item__c.Mode_Of_Travel__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" style="width:150px;" />
                   </apex:pageBlockSectionItem>
                   
                   <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false )}" >
                       <apex:outputLabel Value="Location From" styleClass="text" />
                       <apex:inputField value="{!Expense_Line_Item__c.Location_From__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" style="width:150px;" />
                   </apex:pageBlockSectionItem>  
                   
                    <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false )}" >
                       <apex:outputLabel Value="Location To" styleClass="text" />
                       <apex:inputField value="{!Expense_Line_Item__c.Location_To__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Travel',true,false  )}" style="width:150px;" />
                   </apex:pageBlockSectionItem>
                   
                   <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Food',true,false  )}" >
                        <apex:outputLabel Value="Sub Expense" styleClass="text" />
                        <apex:inputField value="{!Expense_Line_Item__c.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Food',true,false  )}" style="width:150px;"  />
                   </apex:pageBlockSectionItem>
                   
                    <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Entertainment',true,false  )}" >
                        <apex:outputLabel Value="Sub Expense" styleClass="text" />
                        <apex:inputField value="{!Expense_Line_Item__c.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Entertainment',true,false  )}" style="width:150px;" />
                   </apex:pageBlockSectionItem>
                   
                    <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Lodging',true,false  )}" >
                        <apex:outputLabel Value="Sub Expense" styleClass="text" />
                   <apex:inputField value="{!Expense_Line_Item__c.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Lodging',true,false  )}" style="width:150px;"  />
                   </apex:pageBlockSectionItem>
                   
                    <apex:pageBlockSectionItem rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Others',true,false)}" >
                        <apex:outputLabel Value="Sub Expense" styleClass="text" />
                        <apex:inputField value="{!Expense_Line_Item__c.Sub_Expense__c}" rendered="{!IF( Expense_Line_Item__c.Expense_Head__c== 'Others',true,false  )}" style="width:150px;" />
                   </apex:pageBlockSectionItem>
                    <apex:pageBlockSectionItem >
                         <apex:outputLabel Value="Comments" styleClass="text" /> 
                         <apex:inputTextarea value="{!Expense_Line_Item__c.Comments__c}" style="width:150px;" />
                  </apex:pageBlockSectionItem>                                  
               </apex:pageBlockSection>   
                     
            </apex:pageBlock>
            <div align="center" draggable="false" >
            <apex:commandButton action="{!Save}" value="Save" style="font-style:BOld;size:20px;font-family:Georgia ;color:Black; background:LightBlue;width:95px;" /> &nbsp;
            <apex:commandButton action="{!Cancel}" value="Cancel" style="font-style:BOld;size:20px;font-family:Georgia ;color:Black; background:LightBlue;width:95px;"  /> &nbsp;
            <apex:commandButton action="{!saveNew}" value="Save & New" style="font-style:BOld;size:20px;font-family:Georgia ;color:Black; background:LightBlue;width:95px;" />
            </div> 
       
    </apex:form>
    </div>
    </apex:page>