Resolution:
Correct the code; then recompile.
Example:
In the following example, the RETURNING RET STRING syntax is illegal and should be RETURNING RET TO STRING-ARRAY[0].
class-id a. method-id main static. declare d as type System.Func[string] set d to delegate(params string-array as string occurs any returning ret as string *>set ret to string-array[0] end-delegate end method. end class.