Canon 729

Any reservation of the absolution from sin lacks all force: (1)

if a sick person who cannot leave the house or a spouse confess

in order to celebrate marriage; (2) if in the prudent judgment

of the confessor, the faculty cannot be requested from the competent authority without grave inconvenience to the penitent or

without danger of violation of the sacramental seal; (3) outside

the territorial boundaries in which the authority who makes the

reservation exercises power.