13.(1) At the time of giving the notice referred to in sub-section (2) of section 12, the Board shall, in the prescribed manner, serve a notice on the debtor (unless the debtor is himself the applicant) and on every creditor whose name and address are given in the application and also publish a general notice requiring the debtor and all creditors to submit a statement of debt in the prescribed form within one month of the date of service of the notice, or publication of the general notice, which ever is later and further requiring all creditors to produce on a date specified in the notices all documents (including entries in books of account) by which the creditor intends to prove any debt owing to him, together with a true copy of each such document:Provided that, if the Board is satisfied that the debtor or any creditor is for good and sufficient cause unable to comply with such notice, it may extend the period for the submission of his statement of debt or the production of his documents and true copies thereof.(2) If any creditor fails to comply with a notice under sub-section (1), the Board, if so empowered under section 7, may pass an order in writing declaring that the amount of any debt due to him from the debtor on the date of such order shall, for the purposes of this Act, be deemed to be the amount stated in the statement of debt submitted by the debtor, and that no debt of which the creditor has failed to submit a statement, other than a debt which the debtor has included in his statement of debt shall be payable;and such order shall not be questioned in any Civil Court or in any manner other than that provided in this Act.(3) If any debtor fails to comply with a notice under sub-section (1), the Board shall dismiss the application and may allow against the debtor such costs as the Board considers reasonable and such costs shall be recoverable as a public demand on application made within the prescribed period by a creditor to whom the same is due:Provided that an order made under sub-section (2) or sub-section (3) may be varied or reversed by the Board on an application for review or by the Appellate Officer on appeal if it is proved to the satisfaction of the Board or of the Appellate Officer that the creditor or debtor or any person referred to in clause (d) of sub-section (1) of section 11, as the case may be, had no knowledge of the notice under sub-section (1) or that he has complied with it or that he had sufficient reason for non-compliance:Provided further that when a Board has ceased to exist an order made under sub-section (2) or sub-section (3) may be varied or reversed by the Appellate Officer on an application if it is proved to his satisfaction that the creditor or debtor or any person referred to in clause (d) of sub-section (1) of section 11, as the case may be, had no knowledge of the notice under sub-section (1) or that he has complied with it or that he had sufficient reason for non-compliance.