Akhazhanov, T.B., et al. “Erratum To: ‘Coefficients of Multiple Fourier-Haar Series and Variational Modulus of continuity’ [Bulletin of the Karaganda University. Mathematics Series, No. 4(112), 2023, Pp. 21–29]”. Bulletin of the Karaganda University. Mathematics Series, vol. 113, no. 1, Mar. 2024, p. 218, doi:10.31489/2024m1/218.