Interception of conveyances: only detain or confiscate goods/conveyances where GST violation is established; hard-copy notices suffice. The Circular modifies prior instructions by replacing 'three working days' with 'three days' and revising FORM GST MOV-05 release wording. It reiterates rule 138C(2) that prohibits repeat physical verification of a conveyance across States unless new information of tax evasion arises. Where portal FORMS are unavailable, hard-copy notices/orders may serve as proof of initiation of action between tax authorities. Detention or confiscation must be confined to goods and conveyances for which a violation of the GST Acts or rules is established, allowing selective action against only non-compliant consignments on a conveyance.