SharePoint Ring - New Diagnostic Tool for On-Prem

Hi Trevor, 

I had an issue today and tried to use SharePoint ring tool but for some reason it is not giving me fruit full info...I was able to fix the issue but i want to know more about it. becuase this one is really good handy toold.

OriginalPermissionMask check failed for {53A56103-E4BC-4739-8CC9-E44A10670670}. Asking for 0x00000005, have 0x2000011001

--Ring tool reply for 005==> 

EmptyMask
ViewListItems
EditListItems

OriginalPermissionMask check failed for {53A56103-E4BC-4739-8CC9-E44A10670670}. Asking for 0x00000015, have 0x2000011001

--Ring tools reply for 015==> 

EmptyMask
ViewListItems
EditListItems
ApproveItems

PermissionMask check failed for {53A56103-E4BC-4739-8CC9-E44A10670670}. Asking for 0x00000041, have 0x2000011001

-Ring tools reply for 041==> 

EmptyMask
ViewListItems
ViewVersions

 and having mask value(0x2000011001) ==

EmptyMask
ViewListItems
ViewFormPages
Open
UseRemoteAPIs

From above how can i tell which account is having issue with the permission. is this GUID(53A56103-E4BC-4739-8CC9-E44A10670670) reflect a user name? looks like "have mask" have more permission than asking.

BTW issue was the App Pool account of a web application, which dont have permission on the UPA, causing the error.