As a result of the analysis of known methods for ensuring data integrity, it was found that in conditions of continuous growth in the volume and value of information processed and stored in information automated systems for various purposes, the main disadvantage is the high redundancy of control information, leading to an increase in the load on the data warehouses of the systems in question and, as a consequence, a reduction in their resources. A method of ensuring data integrity based on combinational coding is considered, taking into account the analysis of the value of the protected information, and the results of its research related to the possibility of reducing the amount of introduced redundancy when using, in particular, Reed-Solomon codes are presented.