A Columbian national is coming to the United States for a visit.
She has noticed that her passport number and the passport number listed on her visa are different. Is this normal, or a potential problem?
If the passport number, and the passport number listed on the visa, do not match then this mismatch could cause serious difficulties during travel. For example, a border control officer could conclude that she was somehow trying to use somebody else's visa to enter the country.
She should contact the US agency which issued her visa, tell them about the problem she noticed, and ask them what they can do to correct the situation. This should obviously be done as soon as possible before commencing travel.