Vadim Agievich – Head of Department of Corporate Architecture, Surgutneftegas Open Joint Stock Company; Postgraduate Student, Department of Innovation and Business in Information Technologies, Faculty of Business Informatics, National Research University Higher School of Economics.
Address: 1, build. 1, Grigoriya Kukuyevitskogo str., Surgut, Khanty-Mansiysky Autonomous Okrug – Yugra, Tyumen Region, 628404, Russian Federation.
E-mail: agievich_va@surgutneftegas.ru

Rinat Gimranov – Head of Division of Information Technologies, Surgutneftegas Open Joint Stock Company.
Address: 1, build. 1, Grigoriya Kukuyevitskogo str., Surgut, Khanty-Mansiysky Autonomous Okrug – Yugra, Tyumen Region, 628404, Russian Federation.
E-mail: gimranov_rd@surgutneftegas.ru

Victor Taratoukhine – Head of SAP Academic Department, Faculty of Business Informatics, National Research University Higher School of Economics; Managing Director ERCIS Competence Center ERP and head of ERCIS Lab. Russia, University of Munster, Germany.
Address: Germany, Munster, Leonardo-Campus, 3, University of Munster, ERCIS – Headquarters. 
E-mail: victor.taratoukhine@ercis.uni-muenster.de

Enterprise architecture comprises a full description of an enterprise and its general plan. This general plan links different aspects of infrastructure into a single system. When modeling the basics of the enterprise architecture, the architect team must collect information and structure it in architectural repository in accordance with the chosen methods. However, enterprise architecture is generally prone to continuous alterations. Under such circumstances, there arises a problem of providing the adequacy of the architectural repository model (meaning its conformity to the modeled object), both during both its initial mapping and in following its subsequent alterations. Thus, problems of providing  adequacy of basic enterprise architecture models and architectural repository data consistence are relevant when building the enterprise architecture of big companies.

As a result, it becomes a very difficult task to map consolidated architectural conceptions which require combining information from different models which, in turn, is impossible without model consistency on the data level (meaning architectural repository data consistency).

The article suggests using a joined catalogue of architectural components and IT-solutions' architecture models for the purposes of organizing the construction of a joint base corporate architecture and the provision of its models' adequacy while taking into account the continuous IT-landscape changes. This approach allows for inviting the help of a wide range of specialists, which not only reduces the deadline and keeps the models relevant, but also lays the ground for the uniform formal documentation of the planned IT-solutions. The requirements for software are used for the subsequent software choice or development with the objective of designing a prototype of the information system to be used as a means of providing the consistency of models based on a united architectural components catalogue within the framework of the suggested approach.