Mandatory e-storage of export documents requires digitally signed uploads at shipping bill filing; physical supporting documents disallowed. Mandatory implementation of eSANCHIT requires exporters or their authorized persons to upload digitally signed supporting documents on ICEGATE at the time of filing the Shipping Bill; physical supporting documents are prohibited. A Shipping Bill is deemed filed and self-assessment completed when ICEGATE generates the Shipping Bill number. Clearance orders after assessment, payment and examination may be recorded and conveyed electronically. The authorized person must retain the assessed copy of the Shipping Bill and original supporting documents for the prescribed retention period and produce them when required; noncompliance attracts penal liability.