Do I really have to send Form 8453 / 8949 to IRS?

I filed my taxes. My 1099B had lots of transactions that TT could not handle so manually entered summary for Short term cap gain, long term cap gain and disallowed gains. Both are covered.  The 1099 B PDF file is 1000 pages long. After transmitting the returns, TT said I need to file 8453 with 8949 or statement (1099B).