I receive a message I cannot figure out with a numeric question:

5/50 good answers not coherent for a simple question [question ID]

the question is something like:

\element{groupID}{
  \begin{question}{questionID}\label{q:questionLabel}
    questionText
  \begin{choiceshoriz}
  \AMCnumericChoices{165}{exact = 0, decimals = 1, digits = 5, sign = false, scoreexact = 3, approx=0, scoreapprox=0}
  \end{choiceshoriz}
  \end{question}}
...
\cleargroup{all}
...
\copygroup[1]{groupID}{all}
\insertgroup{all}

No more questions in same groupID
I have reduced the score margins to 0 but error stays.
Cannot find anyting about it in doc or wiki.