How to add fields to the form DirPartyQuickCreateForm in D365FO

 I got a requirement to add few fields while creating customer and those fields data should be auto populated from customer group.

• To create customer/vendor the standard system will call the  DirPartyQuickCreateForm. 
• We can't add fields directly to this form. It will not work and we can't get the control's in logic.

Solution :

•     From form inti method the below will trigger.

        

• Here They are calling field groups in table.
• If you open the table you can find that groups.

            

•  You can drag the required fields to the above mentioned groups.

• For my requirement I have add the field in cust table and cust group and dragged in to that group.

• For auto population I have added the below code in modified method

[ExtensionOf(tableStr(CustTable))]
final class custTable_Extension
{    
   public void modifiedField(FieldId _fieldId)   
   {        
	next modifiedField(_fieldId);

        switch(_fieldId)
        {
            case fieldNum(CustTable, CustGroup):
                this.MarkGUA = CustGroup::find(this.CustGroup).MarkGUA ;
                break;
        }
    }
 }

OuptPut :

Keep daxing!!