What concrete measures by port and customs office did the 2020–2023 National Action Plan contain to cut release times?

The 2020–2023 National Action Plan to cut release times for definitive imports, published by SAT after the Time Release Study, gives each precinct a matrix of opportunity areas, actions, responsible parties,… deadlines and instruments. Land, Ingeniero Juan Luis Lizarralde Arrillaga border post (Tecún Umán II customs): 8 areas and 19 actions, among them the post's 2020–2023 master plan (larger yards, booths unifying migration, customs and quarantine control, a separate vehicle exit), widening the central boulevard to four lanes (MICIVI, 2020–2021), requiring the declaration and its documents on arrival, advance cargo declaration, a risk-management system for land cargo and a new quarantine treatment area (MAGA), moving the weighbridge outside the post, aligning customs brokers' hours with Customs and the temporary container admission form (ATC). Maritime, cross-cutting actions for the three temporary customs depots (EPQ, EMPORNAC, APM Terminals Quetzal): 20 areas and 40 actions, with the Joint Action Protocol and joint inspections (National Facilitation Committee, MINECO), compliance with resolution SAT-DSI-817-2018 on non-intrusive equipment, web data exchange with SAT, bank hours aligned with Customs, automation of the loading list (AGEXPORT, ASONAV), the Foreign Trade Single Window for non-tariff permits, cargo traceability in 'Agencia Virtual' and ATC transmission after discharge; Santo Tomás adds connectivity for DIPAFRONT and SGAIA and the use of radioscopic images; Puerto Quetzal (EPQ) removes the coordinator's document review before immediate verification and centralises green-channel joint inspections; APM Terminals studies berthing-to-discharge time and sizes crews to demand. Air, COMBEX-IM depot (Aduana Express Aéreo): 8 areas and 13 actions, such as validating transport documents before arrival, an importer data-update campaign, guides for occasional importers, automation of permitted activities, longer BANCASAT payment hours, digital signature on the value declaration and a depot appointment system for physical inspection. The plan was approved by SAT, MINECO, MAGA, MINGOB/PNC, MARN, MEM, MICIVI, MSPAS, PRONACOM, MINDEF, EPQ, EMPORNAC and ZOLIC for the public sector and, for the private sector, APM Terminals Quetzal, CATRANSCA, CENTRARSE, CLADEC, the Coordinadora Nacional de Transportes and the foreign-trade chambers and associations.