Info option indicates the informational log. Error option indicates the failure occurred during the processing the background job.
Participant, Plan, Service Booking, Payment Request, Invoice, Invoice Line Item
Lookup to the record that is related to the log. The Logs related list is also available on the Maica objects.
Job Id
This is a system filed to group the apex batch operation. The chunks of a single batch job will have the same Job Id that indicates that logs are from the same batch.
Processor, Payload
System fields that sometimes populated with the apex class name and the input parameters of the failed process. This is mostly for System Administrator. Maica will provide an option to retry such failed processes in the future releases.