CA Pub Util Code Section 102100.6

An action by the board shall not be void or voidable under either of the following circumstances:

(a)

If it is determined, subsequent to an action in which a member representing a participating entity casts a vote, that the agreement for that participating entity did not comply with subdivision (b) of Section 102100.3.

(b)

Because of any mathematical or clerical error in the information used to calculate, or because of the calculation of, the apportionment referred to in paragraph (5), (8), or (9) of subdivision (d) of Section 102105.1.