I am having some doubts regarding SP.
1.Why we need to perform SPAU & SPDD during the time of patching??When & why we should do the Modification adjustments??
2.Why we apply SP from 000 client & not from any other client??What special feature does 000 client have other clients??If we do a client clopy with sap_all profile from 000 client to my customized client 100 can I do SP from 100 client??