Transaction OAG1 options Reserve 1 and Reserve 2 what is the difference?

Hi,

I'm applying the OSS note 1451769 (Enhancement in Archivelink file attributes in GOS scenario) in my system but on it says that I have to select the checkbox "Reserve 1".

My question is, what does this option? This change or could affect something in the system or is ok if I select this option?

If you click on the following link below you will see the note that I'm talking about:

http://service.sap.com/sap/support/notes/1451769

Thanks!
Carlos