is there a general error log ?
suppose a process definition is deployed with errors, may be a cycle or a node with no transition. is there a place where these errors are logged?
or suppose a action handler which is involved in the buisness process which throws an error during execution. where does this error appear?
only in the server.log?
no, not specifically. jBPM uses log4j which can be configured to store jBPM errors somewhere alse, but that is a log4j thing