Spanish translation: tiene que quedar claro de antemano
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English to Spanish translations [PRO] Social Sciences - International Org/Dev/Coop / Organizaciones de Ayuda Humanitaria
English term or phrase:must be made clear in advance
If forwarders or other specialised agents are asked to organise charter flights it must be made clear in advance if they are prepared to actually carry out the
transport right up to the target airport in the troubled region.
La idea sería "debería establecerse por anticipado" o "de antemano" según lo entiendo yo.