The relevance of this topic is due to the fact that the institution of bankruptcy in Russia is at the initial stage of formation. The insolvency law has a large number of gaps, the regulation of which is possible only through the formation of new and non-standard practices. The subject of the study is the preclusive term for inclusion in the register of creditors' claims the requirements for bankruptcy proceedings. The scientific novelty of the work is due to the emergence of new legal positions that have not yet been studied. The author of this article considers the problems of including creditors' claims in the register and summarizes the practice.