This research is present in order to uncover inconsistencies in the Indonesian Counseling Book Series published by Badan Bahasa on its official page. The books that are the object of this research are the Spelling Counseling Series, the Forms and Choice of Counseling Series, the Grammar Counseling Series, and the Sentence Counseling Series. The data that is critically reviewed in this research object is data that deviates from the latest applicable rules. The procedure of this research follows two language error analysis procedures. The research procedures namely problem identification and problem description. Identifying the problem is done using Simak Method and Catat Technique. Every time an inconsistency is found, the researcher notes and simultaneously identifies the form of the inconsistency on the data card. At the stage of describing the problem, a comparison is used between the explanation and examples in the object of research with the rules that applied in KBBI and PUEBI. The difference found then described in order to obtain a representative description of the inconsistencies in the object of research. The conclusion of the study stated that there are explanations and data contained in the object of research contrary to the latest rules that applied. These contradictions or inconsistencies are found in every part of the research object.