After an applicant is granted a visa, they should use the time to complete any other procedures required for leaving their own country before the visa's period of validity expires. But if they are unable to depart for the target country within that period, such as being hospitalized or other unforeseen events due to the force majeure, then you should take the related materials as proof to the embassy and consulate of your target country stationed in your own country and apply for a visa extension. If the visa's expiration date is not long passed, then your application will be granted, or you will fail to get the visa extension.
In normal conditions, the applicant should arrive in and leave the target country within the period of the visa's validity. Otherwise, you overstaying will be deemed as illegal residence, the consequences of which are you may be fined, interned or deported. However, if there are special reasons for your visa extension application, you should go to the immigrant organization in your target country and ask for the visa extension prior to the time of your visas expiration date. If the period of validity and the duration of stay are all expired and you still do not leave this country, you should request for the visa extension immediately with all necessary and valid documentation.
Within the time of your staying in your target country, if you want to apply for the visa of another country (your second target country), you should go the embassies or consulates of that country stationed in your first target country to apply for the visa by holding your valid passport and other required materials.
Revoking of Visa
If the visa issuing organization takes the visa back and cancels its validity after issuing it, then it is called visa revoking. Only the visa issuing organization has the right to revoke visa. For following two reasons, the visa will be revoked:
1. The visa possessor is considered not suitable to enter or transit the country;
2. The visa possessor loses the visa together with the passport.
The purpose for revoking a visa is to prevent the perpetrator use of the visa to carry out illegal activities and so on.
If the reason for visa revoking is due to loss by visa possessor, the applicant may re-propose for the application of visa reissue. As long as the evidence is sufficient and enough material is prepared, after verification by the visa issuing organization, a new visa should be issued to you. If it is the visa issuing organization that revoked the visa, the applicant has the right to appeal, but generally the visa will not be reissued.
