Get your taxes done using TurboTax

With regard to @zombi12 question, if there is no change to your income or tax due you do not need to file an amended return.

Click here for "Should I file an amended return? From the IRS.  Then lick "Begin" at the bottom of the page.  It will ask you specifics and recommend whether to amend your tax return or not.

Click here for information regarding when to amend your tax return.

With regard to @GeoffS question, I am not sure if you are saying you have the same scenario or not.  Is your K-3 blank?

It is correct for 2021 to leave Box 16 unchecked since you are not required to report Schedule K-3 for the 2021 tax year. Be sure to retain all info sent with Schedule K-1 in case you need it in the future.

For 2021 the IRS released procedures 

Regarding the IRS "Safe Harbor I believe  @GeoffS is referring to the following:

Notice 2021-39PDF provides penalty relief for good-faith efforts to adopt the new schedules. Today's transition relief, appearing in new frequently asked questions (FAQs) on Schedules K-2 and K-3, allows an additional exception for tax year 2021 filing requirements by certain domestic partnerships and S corporations.

The IRS is providing an additional exception for tax year 2021 to filing the Schedules K-2 and K-3 for certain domestic partnerships and S corporations. To qualify for this exception, the following must be met:

• In tax year 2021, the direct partners in the domestic partnership are not foreign partnerships, foreign corporations, foreign individuals, foreign estates or foreign trusts.
• In tax year 2021, the domestic partnership or S corporation has no foreign activity, including foreign taxes paid or accrued or ownership of assets that generate, have generated or may reasonably expected to generate foreign source income (see section 1.861-9(g)(3)).
• In tax year 2020, the domestic partnership or S corporation did not provide to its partners or shareholders nor did the partners or shareholders request the information regarding (on the form or attachments thereto):
  • Line 16, Form 1065, Schedules K and K-1 (line 14 for Form 1120-S), and
  • Line 20c, Form 1065, Schedules K and K-1 (Controlled Foreign Corporations, Passive Foreign Investment Companies, 1120-F, section 250, section 864(c)(8), section 721(c) partnerships, and section 7874) (line 17d for Form 1120-S).
• The domestic partnership or S corporation has no knowledge that the partners or shareholders are requesting such information for tax year 2021.

To enter a K-3 in TurboTax:

Entering a K-3 in the individual return:

1. Open the Schedule K-1 Worksheet.
2. Scroll down to the Foreign Transactions line: For partners, this is line 16. .
3. Check the Schedule K-3 is attached if checked box.
4. Enter the Name of Country or U.S. Possession.
5. Complete lines B through AI based on the K-3 received.

 Click here for additional information on Form K-3 for 2022.

Click here for guidance issued by the IRS on" relief for certain partnerships preparing Schedule's K-2 and K-3"