COBCH1809 keyword is not a suitable SORT key type - does not implement IComparable Comparable interface When sorting a managed array, if the type of the sort key (or of the array element if no key is explicitly specified) is final,
meaning that it cannot be sub-typed, then that type must implement the java.lang.Comparable interface when compiling for JVM. If the type is not final, and if that type does not implement the correct interface, then the sort might cause an exception
at run time.
COBCH1812 Operand is not a condition name (level 88 item) The program contains an operand that is not a level 88 item (condition name). For example, if the first operand in a SET statement
is a condition name, then all other targets must also be condition names.