Addendum filing for rectification of defects: allows companies to correct submitted forms with required attachments and verification. Form No. 67 enables filing an addendum to rectify defects or provide further information called by the Registrar of Companies under Rule 20A(3). It requires SRN, filing date, form number, corporate identifiers, company name and address, filer contact details, a description of defects and rectifications, attachments (up to five) with stamp duty particulars and SRN for additional duty payment. The form must be digitally signed by an authorised signatory with designation and DIN/PAN/membership details, and may be certified by a practicing chartered accountant, cost accountant, or company secretary verifying attached records.