Typically there will be an APP update every 6 months or so - The APP file is received by us and validated, then we distribute it to each system.

There are usually quite a few errors in the first APP run but these are reduced to a minimal level before we actually proceed with any updates. 

We will normally handle all aspects of the cost update for you but it is normal that selling prices are also changed at this time to reflect any increases in costs. Different companies have different preferences as to how this is done (use ARP, add 2% to PGC xxx, update according to an Excel file, etc) so please communicate your needs in good time so that we can deliver accordingly.