Library /sys$common/syshlp/basichelp.hlb Compile time errors, KEYCANNOT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ERROR - A KEY  clause  in  an  OPEN  statement  specifies  a  variable
  declared  as  dynamic  in  a  MAP DYNAMIC statement.  Specify a static
  variable in the KEY clause.  That is, declare the variable  in  a  MAP
  statement, not a MAP DYNAMIC statement.