cannot use the context variable, <str>, declared in the store

  Explanation:  A context variable was used in a  STORE  statement
  that  was  the  same  as  the  one  declared  in  the STORE RSE.
  Example:  STORE J IN PORT USING J.CITY = J.COUNTRY END_STORE

  User Action:  Change the command to include the correct  context
  variable.