Issue adding LDAP Entry - Could not add entry LDAP_NAMING_VIOLATION

This is what i did. FIrst I got different error so i added attribute
objectClass: person which gave me this error.

this is the code. the ldap object was created earlier:

$addEntry = new LdapManage();
$addEntry->setDn('cn=Test,dc=corp,dc=test,dc=com');
$attribs = array(
    'objectClass'   =>'person',
    'cn'    =>'Test',
    'mail'  =>[email protected]',
);
$addEntry->setAttribs($attribs);
$entry = $addEntry->createEntry();
//lets add entry
$return = $ldap->add($entry);

if(PEAR::isError($return)){
    die('Cant add entry: '.$return->getMessage());
}


i get the LDAP_errors mentioned. Seems like it isn't as simple as the
example in the manual. Any hint would be appreciated.

Thanks