help for switch to next appid,don't show 503.

INFO - - [Jan 20 09:53:10] APPID Over Quota,Auto Switch to [**-1]
INFO - - [Jan 20 09:53:11] APPID Over Quota,Auto Switch to [**2-2]
INFO - - [Jan 20 09:53:12] APPID Over Quota,Auto Switch to [**2-3]
INFO - - [Jan 20 09:53:13] APPID Over Quota,Auto Switch to [**2-4]
INFO - - [Jan 20 09:53:13] APPID Over Quota,Auto Switch to [**2-5]
INFO - - [Jan 20 09:53:14] APPID Over Quota,Auto Switch to [**2-6]
INFO - - [Jan 20 09:53:15] APPID Over Quota,Auto Switch to [**2-7]