Fissures in the veneers are scale-like, small-area detachments of the upper wood layers. These, as noted in the product datasheet, cannot always be avoided with various wood types. It is simply a natural product that cannot be standardized and grows according to the conditions of its growth environment, which are randomly determined. However, the fact that knots and wood cracks are filled with a filler in a color completely different from the wood texture is not the norm! Why not? Because it has an "unfavorable" effect on the overall appearance. One could jokingly ask why the knot holes and cracks were not filled in carmine red. According to DIN EN 14342 (OP 6), the marking of products for wooden floors must indicate the intended use and the essential properties with reference to the aforementioned standard. The product information provided here in the forum apparently does not contain such a source reference. According to DIN EN 13629, the three normative sorting classes with the corresponding characteristics are listed there under OP 4.3.3. Since the product datasheet shows nothing corresponding, this is probably a "free sorting," which is also called factory sorting. In your case, it is a smoked oak (where the smoking relates to the post-treatment and thus to the appearance). According to DIN EN 13629, the parquet floor you purchased would be assigned to the class with the lowest requirements. For in this class, all possible characteristics are allowed without restriction as to size or quantity, provided they possess the required strength and do not impair durability. And that is apparently the case with you. So bad news if you base the procedure on the standards. Also, hints that such features were not recognizable from earlier possibly shown sample boards are probably not legally conclusive. Sorry, but this is the current state of affairs regarding the parquet flooring. -------------------------------- Greetings to all: KlaRa