[bmj_23]

Oliver, I dont have a document which explains the differences in that level of detail unfortunately.

However, my understanding has always been that you can define accessorial codes on your orders, items and locations. During the shipment build process, if OTM finds a rate that has an accessorial code which matches one of those that you have set on your orders, locations or items, that accessorial code from the rate will be applied to your shipment.

If a rate does not have a matching accessorial code, then no accessorial cost will be applied against the shipment regardless of the accessorial codes defined on your orders, locations and items but the rate will still be valid for that order.

Special services work in a similar way, but the key difference is that if an order has a special service defined on it, a rate which does not have that special service defined on it will NOT be considered for that order during the build shipment process. For accessorials it would have been considered.

In the case of accessorials, if the always apply flag is set on the accessorial code, then it will always be added to your shipment regardless of what appears on your orders, locations, items and rates.

Re-post if you need more detail