After you file

The name and SS# are correct on the SSA-1099. However, wouldn't the IRS simply tell me about any mismatch?  I've done my tax returns thru TT since early 90s and nothing's changed as far as personal info & SS#. The first 'reject' was for 2018 return, which was done on the standard 1040. I called at that time and could not get any specifics except that it's just additional information requested. 2019 was the first 1040SR filed. Thanks.