We are attempting to retrieve the Zoho "Lead ID" using our custom field "Site ID".

I have tried many different ways of referring to our custom field "Site ID" but with no luck.  Thanks for your help with this.

error message:

     <response uri="/crm/private/xml/Leads/getSearchRecordsByPDC">

     <error>

     <code>4420</code>

     <message>Invalid Search Column.Check it now</message>

relevant code:

     $url = " https://crm.zoho.com/crm/private/xml/Leads/getSearchRecordsByPDC";

     $selectColumns="leads(LEADID)";

     $searchColumn="Site%20ID";

     $searchValue="24090";

     $param= "authtoken=".$token."&scope=crmapi"."&selectColumns=".$selectColumns."&searchColumn=".$searchColumn;

     $param .= "&searchValue=".$searchValue;