Making Contact Standard Fields Mandatory

1. Go to the Contact Standard Fields settings page from the Global Settings page.
2. Select the standard field you want to make mandatory.
3. Check off the "Mandatory" checkbox.
4. Hit Save.

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Alternate method: Create a custom field of type Custom Field Type: Special – Browser Script and place it on the same entity that you'll be using it. For contacts, you'll want to put the custom field in via Global Settings > User & Contact Settings > Contact Custom Fields

function savefunc(frm){
   var element=frm.uaddress;
   if(element&&element.value.length==0){
      alert("Address is empty!");
      return false;
   }
   element=frm.phone;
   if(element&&element.value.length==0){
      alert("Phone is empty!");
      return false;
   }
   element=frm.ucity;
   if(element&&element.value.length==0){
      alert("City is empty!");
      return false;
   }
   element=frm.ucountry;
   if(element&&(element.value.length==0||element.value=="0")){
      alert("Country is empty!");
      return false;
   }
   element=frm.email;
   if(element&&element.value.length==0){
      alert("Email is empty!");
      return false;
   }
   return true;
}

See Also

• Contact and Account Standard Fields
• Making Company Standard Fields Mandatory
• Making Company Mandatory for Contact Records