Refusal and appeals
Whenever the diplomatic missions and consular offices decide to refuse a visa, the applicant must be always notified. However they are under no obligation to provide reasons for the refusal, except in the case of visas for family reunification or for work for third parties.
You may appeal the refusal of a visa either by means of a request for reconsideration from the same diplomatic mission or consular office with one month, or by requesting a judicial review before the Supreme Court in Madrid, within two months.
http://www.maec.es/subwebs/Consulados/Londres/en/MenuPpal/Servicios%20Consulares/RequirementsEntrySpainVisas/Paginas/visas_emblondon.aspx
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The purpose of the visit and/or length of stay cannot be altered once the visa has been issued. Please check carefully when collecting passports that the visas are correct, any printing errors or omissions may affect the intended stay within the Schengen area.
http://www.maec.es/subwebs/Consulados/Londres/en/MenuPpal/Servicios/Visados/Paginas/applicationfees_services.aspx
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拒了可以上诉,
但一旦发了签证就不可以再改。
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