Can Logging level, place and retention for a process logs can be easily customized?
The logging level itself can't be customized thru shapes in Boomi itself (DEBUG, INFO, ERROR etc). If that is what you mean. But take a look at the Boomi Notify shape. This allows you to generate your own custom log messages. So I don't see a problem here.
Regarding log file retention, that is a global value for all log files. See Adam's reply How long are the process reporting logs kept? And, can the duration be changed?
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