Thanks for information.
However, as I remember, in real world, the line set under FIFA rule is 7 players, not 11 players.
I prefer T11 adopts standard FIFA rule on this, because cancelling matches as a result of insufficient players are too frequent in T11 and it is unfair.
As all teams have at least 14 players at season beginning. Even if they are insolvent and are forced to sell 2 players per week, their number of players may not easily drop to 7. Thus they can almost complete all matches of whole season. But T11 match engine may not know how to handle teams with less than 11 players in field.