What type of 1099? Are you trying to enter a 1099-R as a w-2?
For more information on correcting your EIN, please see the TurboTax FAQ below:
https://ttlc.intuit.com/replies/5660674
For more information on your employer’s EIN not matching, please see below:
https://ttlc.intuit.com/replies/4587566
NEW Case # [social security number removed] Mark TurboTax 2/10/2020 0800 MT4 out of 5 W-2s in error; maybe an issue with the automatic transfer from the 2018 Turbo tax file or from the IMPORT of a provided EIN. The TurboTax help desk recommended to DELETE each W-2 and start from scratch and manually enter in the data; include the dash after the 1st two EIN digits. Resolution:I had to delete all five of the W-2s and then manually enter in each W-2. The issue appeared to be the IMPORT function of an existing employer EIN that although correctly entered cause the IRS to reject the form because of incorrect EIN. Even though the EIN when auto populated should the same information. The only way to fix it was to actually delete the W-2 versus just editing the W-2 with the same EIN.