The account code represents the account which data will be pulled from. Without identifying the account, nothing can be returned.
The Account Code is typically expressed as a combination of three letters and a 4 digit number. It is case sensitive and the letters are always lower case. An example: abc1234
The Account Code should be specified as the hostname portion of the server name in the request URL like this: abc1234.zonarsystems.net. This is the preferred method and client developers should use it.
Alternately the account code may be specified with the customer variable like this: https://gtc.zonarsystems.net/interface.php?customer=abc1234.