Integrated Bill of Entry declaration requires new mandatory fields and AD code before customs acceptance. Implementation of an Integrated Bill of Entry requires substantial BE format changes with several mandatory fields; ICEGATE publishes the technical specifications and code lists. Operative changes include @@ fields reserved for future use, invoice entry for RBI third party details, expanded RSP flags, mandatory coded enduse values, accessory status declaration, Preceding Level in HSS, a new Commercial Tax Type flag for Central Excise registration under IGCR, mandatory Statement Table codes with type DEC, and mandatory AD Code declaration for outward remittance.