Microsoft 365 Backup Job Log shows “Ensure that the minimum number of streams configured for the job is not greater than concurrent operations configured on the storage device.”
While configuring Microsoft 365 job, value for the field “Minimum number of streams required, fail the job if fewer streams are available” in “Microsoft 365” tab is greater than the concurrent operations allowed for the deduplication storage.
Change the value of minimum number of streams or change the concurrent operations for deduplication storage at below location
Storage>deduplication device> properties> concurrent operations