Those two codes may not be documented anywhere, but in the install code in UPS.php, where the valid values for the pickup type are set, is:
$db->Execute("insert into " . TABLE_CONFIGURATION . " (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, date_added) values ('UPS Pickup Method', 'MODULE_SHIPPING_UPS_PICKUP', 'CC', 'How do you give packages to UPS? CC - Customer Counter, RDP - Daily Pickup, OTP - One Time Pickup, LC - Letter Center, OCA - On Call Air', '6', '0', now())");
So I would assume UPS knows what the '6' & '0' values are, and calculates accordingly.
Does that ring any bells for anyone?





