This table is used to contain a list (chain) of web servers that the web client is allowed to use to fulfill web requests in connection with a given POS functionality profile. This table contains the setup for the profile in general (all request) as well as the ability to define a different chain for specified requests. Each chain is ordered by priority; the higher the number, the higher priority. The module starts by trying to connect to the server with the highest priority and if it fails, it tries the next in the chain and so on until it gets a good connection or runs out of valid web servers.