42Paragraph 52 is amended as follows (new text is underlined and deleted text is struck through):

42 Paragraph 52 is amended as follows (new text is underlined and deleted text is struck through):

52 Therefore, retrospectively applying a new accounting policy or correcting a prior period error requires distinguishing information that:

(a) provides evidence of circumstances that existed on the date(s) as at which the transaction, other event or condition occurred; and

(b) would have been available when the financial statements for that prior period were authorised for issue;

from other information. For some types of estimates (e.g. an estimate of a fair value measurement that uses significant unobservable not based on an observable price or observable inputs), it is impracticable to distinguish these types of information. When retrospective application or retrospective restatement would require making a significant estimate for which it is impossible to distinguish these two types of information, it is impracticable to apply the new accounting policy or correct the prior period error retrospectively.