Resumen
The requirements management processes largely determine the success of a project and should ensure its adaptability to changes in the requirements of stakeholders. Today, these processes are not sufficiently formalized, in particular, for traditional project management. Consequently, management and control requirements should be developed and formalized. The subject matter of this study is methods that manage the requirements of stakeholders in projects. The aim of the article is to increase the effectiveness of monitoring the requirements of the project stakeholders by developing the method of earned requirements and the model that formalizes this method. To achieve the goal, the following tasks are completed: integration of the hierarchical structure of requirements and the classical hierarchical structure of the project activities for obtaining the matrix of control points to meet the requirements of stakeholders linking a certain requirement to the activities that should be carried out to execute the project; development of the method of monitoring requirements; development of a functional model of the suggested method. The methods used are: the methods of decomposition, functional modeling and the modified method of earned volume. The following results were obtained: the method of requirement monitoring was developed; this method enables monitoring carrying out the requirements of project stakeholders in time according to the volume of actually used resources by analogy with the method of earned volume. The approach based on the integration of the hierarchical structure of requirements and the hierarchical structure of the project activities enables supplementing the existing methods of classification of project stakeholders by the indicator of resource requirements. Conclusions.The suggested method formalizes the requirements management processes in the project, enables determining the resource load of requirements, adds this factor to the existing model of requirements. This method is practically supported by the functional model in the IDEF0 notation. The areas of project management (according to the PMBOK standard) where the use of the suggested approach is the most effective are identified. In the process of generating output data for this method use, certain constraints should be considered; these constraints are determined by different types of project stakeholders? requirements and the dimension of the sets of "requirements" and "activities".