A complete investigation is made of the Bianchi identities in simple supergravity without third-class constraints. The treatment is valid for all known forms of supergravity (minimal, nonminimal, alternative minimal, and also the new formulation with an auxiliary superfield). The holonomy group augmented with scale and chiral transformations is considered. The application of a number of general propositions of the type of the Dragon theorems in extended supergravity theories is considered.