When performing an SAP Kernel upgrade from 701 to 720 can different systems be upgraded at different times or must all systems be upgraded together?
The question arrises as SAP note 1636252 states the kernel has to be upgraded on each and every applicable application server in each and every applicable system.
SAP environments that might be impacted here are:
The answer is there is no specific recommendation. A step-by-step method or all systems at one time can be upgraded.