GST composition levy intimation form requires registration details, category, financial year election, declaration and signature. Intimation to opt for composition levy under section 10 requires a migrating registrant to provide GSTIN/Provisional ID, legal and trade names, principal place of business, jurisdiction, select the category of registered person (manufacturers except notified goods; suppliers under Schedule II para 6(b); or other eligible suppliers), elect the financial year for the scheme, and submit a declaration and verification signed by an authorized signatory affirming adherence to conditions and the accuracy of information.