Sir, supposing that the cost of sales (say inventory figure is wrong) figure in the profit or loss statement will be wrong, this figure will be taken to statement of changes in equity, statement of financial position and statement of cash flows.
No matter what the error might be, all the financial statements are to be affected.
So, in that case, will all material errors be pervasive?
No, otherwise all misstatements affecting profit would be pervasive eg failure to write off a material bad debt. There are no definite rules about when something is pervasive, but it really has to have an effect on the FS that mean they are so wrong as to be useless and that the error cannot be ring fenced.