A new version of block is available. The old version will be removed in the future. Use Upgrade Advisor with "~Check model for block upgrade issues requiring compile time information" option selected to replace this block with the new version in your model. See (fullfile(docroot, 'toolbox', 'comm', 'comm.map'), 'cst_release_notes_20a_randsrc_blocks')">R2020a Communications System Toolbox Release Notes for more information.

commrandsrc2