Law 3 Number of Players - Number of Substitutions
Official competitions
Up to a maximum of three substitutes may be used in any match played in an official competition organised under the auspices of FIFA, the confederations or the member associations.
The rules of the competition must state how many substitutes may be nominated, from three up to a maximum of twelve.
Other matches
In national "A" team matches, up to a maximum of six substitutes may be used.
In all other matches, a greater number of substitutes may be used provided that:
* The teams concerned reach agreement on a maximum number
* The referee is informed before the match
If the referee is not informed, or if no agreement is reached before the match, no more than six substitutes are
allowed.
Up to a maximum of three substitutes may be used in any match played in an official competition organised under the auspices of FIFA, the confederations or the member associations.
The rules of the competition must state how many substitutes may be nominated, from three up to a maximum of twelve.
Other matches
In national "A" team matches, up to a maximum of six substitutes may be used.
In all other matches, a greater number of substitutes may be used provided that:
* The teams concerned reach agreement on a maximum number
* The referee is informed before the match
If the referee is not informed, or if no agreement is reached before the match, no more than six substitutes are
allowed.