I changed to readonly in Field Accessibility and Set Field-Level Security setting of that field. But still I can edit that field
User is Sys Admin. Can anyone explain what I need to do.
Thanks 

I want to migrate Opportunity data from One salesforce org to another salesforce org .
Both the salesforce org have existing data .
My requirement is  migrate all opportunity data  along with all lookup fields from one salesforce org to another.

Thanks

Hi,
I had requirement to do some extra stuff  when user create a new  an account or edit an account. So I want to overrride the  standard save button .
I wnat to override the save button in apex could anyone guide me how to do that.

Thanks

I need create a button for copying a specific account record  from one saleforce to another saleforce.

Any possibilities doing it using apex code.

Thanks

I cannot see Visualforce pages  in Content Source dropdown while creating custom button for a custom object.
I had created number of  Visualforce page. One example is

<apex:page standardController="Account" recordSetvar="accounts">
<apex:pageBlock title="Viewing Accounts"> <apex:form id="theForm">
<apex:panelGrid columns="2">
<apex:outputLabel value="View:"/>
<apex:selectList value="{!filterId}" size="1">
<apex:actionSupport event="onchange" rerender="list"/>
<apex:selectOptions value="{!listviewoptions}"/>
</apex:selectList> </apex:panelGrid>
<apex:pageBlockSection >
<apex:dataList var="a" value="{!accounts}" id="list"> {!a.name} </apex:dataList>
</apex:pageBlockSection> </apex:form> </apex:pageBlock>
</apex:page>
Please help me.
Thanks
 

How can I enable API Access in professional edition .
I want use SOAP API . But in professional edition, it seems I cannot use API.
Please give some Idea how to do this.

I cannot see Visualforce pages  in Content Source dropdown while creating custom button for a custom object.
I had created number of  Visualforce page. One example is

<apex:page standardController="Account" recordSetvar="accounts">
<apex:pageBlock title="Viewing Accounts"> <apex:form id="theForm">
<apex:panelGrid columns="2">
<apex:outputLabel value="View:"/>
<apex:selectList value="{!filterId}" size="1">
<apex:actionSupport event="onchange" rerender="list"/>
<apex:selectOptions value="{!listviewoptions}"/>
</apex:selectList> </apex:panelGrid>
<apex:pageBlockSection >
<apex:dataList var="a" value="{!accounts}" id="list"> {!a.name} </apex:dataList>
</apex:pageBlockSection> </apex:form> </apex:pageBlock>
</apex:page>
Please help me.
Thanks