A nice question! the accounting Materiality importance means the extent of the importance of accounting errors that made during recording the vouchers procedures and their negative impact on extracting wrong accounting data , so it lead to wrong conclusions and decisions Managers and (BOD)
As for the relative importance of materiality to the auditor , it is different between errors that are not of significance to financial situations, and thus the decision to settle / correct them depends on the material cost and effort and time !! while others Mistakes that are tangible errors with a significant negative impact,then it requires immediate treatment.