Unevenness in screed and parquet

At our place, part of the parquet on the stairs had to be relaid because it was so uneven that it posed a danger. It was good that the company's own people wavered during the inspection. Otherwise, the entire parquet was laid unevenly and there was a deduction of a whole 400 euros for that. Clarified with experts. There is a table/guideline according to which the damage is quantified. The entrance of the [Sparkasse] is rated higher than the dressing room, which is mostly occupied by the wardrobes. The guideline on what tolerances parquet floors may have is not exactly consumer-friendly.

Are the guidelines for the tolerances available online anywhere?

In case of doubt, for money at Beuthverlag.