Resolution:
Correct the code; then recompile.
Example:
The following example shows code that would throw this error.
interface-id IIndexer.
indexer-id string (i as binary-long).
getter.
setter.
end indexer.
end interface.
class-id a implements type IIndexer.
indexer-id string (i as binary-long).
getter.
end indexer.
end class.