The following example generates a log file which begins with the line

structure       > lists > out of order sectionsblocks, maybe use \setsectionblock

My larger document has over a hundred of these at the beginning.

\setupnote [endnote] [location=none]
\starttext
 \startbodymatter
  \startchapter[title={Body}]
   \startparagraph
    \input knuthmath
    \startendnote
    \input knuth-gpt
    \stopendnote
   \stopparagraph
  \stopchapter
 \stopbodymatter
 \startbackmatter
  \startchapter[title={Notes}]
   \placenotes [endnote]
  \stopchapter
 \stopbackmatter
\stoptext

Can the message be suppressed? Is there a better way to set up the document to have endnotes for text in other-than-backmatter sectionblocks appear in the backmatter sectionblock?

--
Rik