The continuous pregroove can sometimes cause tracking problems on some players. Any variations or defects in the dye layer can prevent proper recording. To provide confidence in product quality. When problems occur, they can be resolved more quickly and easily if publishers know the quality of their discs and have a way to check them. Also, once a product is in the field, fixing a problem is more difficult and expensive.
Publishers can avoid returns and maintain a good reputation by tracking the quality of their discs.
To detect media and recorder compatibility problems. Compatibility between media, writer, and software also is necessary to produce good discs. Certain combinations of write strategy, record speed, and media type can cause poor results. To test for errors that result from use of premastering software. Some premastering software leaves gaps between sessions.