Custodian infrastructure requirement: custodians must provide EDI-ready computerization and secure financial sanction before staff cost recovery posts are notified. Custodians must provide adequate infrastructure for computerization and link with Customs EDI, with existing facilities given a transitional period to upgrade; financial sanction for creation of cost recovery posts must precede the Commissioner's notification of ICDs/CFSs, and authorities should issue Public Notices or Standing Orders to inform stakeholders and acknowledge receipt.