I cannot find anything in the manual. I have a problem where the respondent allocates 100 points into K outcomes to show relative preferences. The dependent variable is a vector of K entries. Each entry is a count that sums to a constant (which does not need to be the same from row to row).

Maybe it was a mistake, but when I coded that the first time, I realized the sum of y wasn’t a necessary input for the distribution as it’s implicit in the output variable.