The Colombian Check-Mig is a mandatory pre-arrival registration document that must be completed by all foreign travelers entering Colombia, regardless of visa requirement. The entire process is conducted online and can be completed between 72 hours and one hour prior to travel. Travelers must submit comprehensive personal, passport, and travel information, along with accommodation details and answers to relevant immigration and health-related questions. Accuracy is critical, as all entries are subject to verification by Colombian immigration authorities. Once approved, the document is delivered via email in PDF format and must be presented upon arrival in Colombia.