; and (2) by inserting after subsection (d) the following new subsections: (e) Applicability of duty To assist (1) The Secretary’s duty to assist under this section shall apply only to a claim, or supplemental claim, for a benefit under a law administered by the Secretary until the time that a claimant is provided notice of the agency of original jurisdiction’s decision with respect to such claim, or supplemental claim, under section 5104 of this title. (2) The Secretary’s duty to assist under this section shall not apply to higher level review by the agency of original jurisdiction, pursuant to section 5104B of this title, or to review on appeal by the Board of Veterans’ Appeals. (f) Correction of duty To assist errors (1) If, during review of the agency of original jurisdiction decision under section 5104B of this title, the higher level adjudicator identifies or learns of an error on the part of the agency of original jurisdiction to satisfy its duties under this section, and that error occurred prior to the agency of original jurisdiction decision being reviewed, unless the claim can be granted in full, the higher level adjudicator shall return the claim for correction of such error and readjudication. (2) (A) If the Board of Veterans’ Appeals, during review on appeal of an agency of original jurisdiction decision, identifies or learns of an error on the part of the agency of original jurisdiction to satisfy its duties under this section, and that error occurred prior to the agency of original jurisdiction decision on appeal, unless the claim can be granted in full, the Board shall remand the claim to the agency of original jurisdiction for correction of such error and readjudication. (B) Remand for correction of such error may include directing the agency of original jurisdiction to obtain an advisory medical opinion under section 5109 of this title. (3) Nothing in this subsection shall be construed to imply that the Secretary, during the consideration of a claim, does not have a duty to correct an error