Enforcement of the sentencing decision may be refused in the following cases:
1° The sentencing decision is based on offences committed wholly, mainly or for the most part on French territory or in an assimilated place;
2° The length of the sentence remaining to be served is less than six months on the date of receipt of the certificate;
3° The sentencing State has refused to give its consent for the sentenced person to be prosecuted, sentenced or deprived of liberty in France for an offence committed prior to his transfer, other than that for which he was transferred.