In the Scientific Use Files of Starting Cohort 1 (Newborns), a critical data error has occurred in the vocabulary competence (PPVT). Affected are, according to current knowledge, the variables von6_sc3, von8_sc3, von10_sc3 (Vocabulary: sum) in the dataset SC1_xTargetCompetencies. Unfortunately, it cannot be ruled out that the use of these variables leads to incorrect results.