The Spanish Tourist Office in London has come under fire for reversing a pledge to allow unvaccinated UK travellers into the country.
The tourist board's error was described as a "spectacular blunder" by the Advantage Travel Partnership chief executive.
The STO in the UK said on Wednesday that rules for unjabbed British tourists had been relaxed as long as they showed proof of recovery.
The statement was incorrect due to a misinterpretation of an official notice from the Spanish government.
Travelers from the UK must have a certificate of recovery if they want to travel outside of the country.
Pedro Medina, deputy director of the STO in the UK, apologized last night for the miscommunication that occurred earlier in the day.
The exception is for those aged 12 to 17 who can show a negative Covid test within 72 hours of arriving in Spain.
If more than 270 days have passed since the final dose, a booster vaccine is required for travellers.
Children under the age of 12 years old are not required to complete a Spanish health control form in advance when travelling with an adult.
Families planning February half-term holidays were affected by the country's previous insistence that all arrivals be fully vaccine free.
Last night's withdrawal of the relaxation guidance drew criticism from a person who had originally welcomed the measure as a step in the right direction.
She described the U-turn as a "spectacular blunder" and "just madness".