I can't add more than 10 million in total proceeds. I had more than 1500 stock transactions and a total of more than 10 million.
"Solution" (workaround) here:
https://ttlc.intuit.com/community/taxes/discussion/while-entering-1099-b-the-maximum-value-for-total-proceeds-and-total-cost-basis-is-9999999-99-i-have/00/709020#:~:text=7%3A03%20AM-,While%20entering%201099%2DB%2C%20the%20maximum%20value%20for%20Total%20proceeds,Total%20cost%20basis%2C%20is%[removed].99.
Basically, split the information into multiple equal entries.