803.12 Mandatories
A. A mandatory restricts the path the disc may take to the target. A disc must pass to the correct side of the mandatory before the hole is completed. Once the disc has completely passed the mandatory line on the correct side (even if it subsequently re-crosses the line), the mandatory is to be ignored for the remainder of play on that hole.
(1) The mandatory line is the line marked by the director or course designer to indicate when a disc has passed or missed the mandatory.
(2) If no line is marked, the mandatory line is defined as a straight line through the mandatory, perpendicular to the line from the tee to the mandatory.
(3) In the case of a double mandatory when no line is marked, the mandatory line is the straight line connecting the two mandatories, and extends beyond them in both directions.
B. A throw is considered to have missed the mandatory if it passes the incorrect side of the mandatory line from the direction of the tee, and comes to rest lying completely beyond that line.
C. A disc that has missed the mandatory results in a one-throw penalty and the next throw shall be made from the drop zone, as designated for that mandatory. In cases where the drop zone is not designated, the lie is marked within five meters of the mandatory object and one meter behind the mandatory line which extends from the correct side of the mandatory.
D. When marking the lie, if the line of play does not pass to the correct side of the mandatory, then the mandatory itself shall be considered the hole for the application of all rules regarding stance, markers, obstacles, and relief. For the purposes of taking a legal stance, the mandatory object which has not yet been passed, and is nearest the tee, will be considered to be the hole.
E. A throw that misses a mandatory shall be penalized and the lie marked according to the mandatory rule (803.12). It will not be further penalized for any other reason, such as out-of-bounds or above two meters.
