You actually don't enter your Partnership cash distributions anywhere on your personal tax return, despite the fact that they are (often) reported as an "other" item by your brokerage firm on Form 1099. (The single exception to this where your the total of your annual cash distributions exceeds the "basis" in your Partnership . . . but that's an advanced tax matter, and also a somewhat rare occurrence, so we won't discuss it further here.)
Rather, the tax item that you will need to enter on your personal tax return is known as a Schedule K-1 (for Partnership). Your Publicly Traded Partnership (PTP) should mail you a K-1 sometime between the beginning of March and the beginning of April. It is that Schedule K-1 that you will need to enter data into TurboTax, or your other chosen tax software program.
The taxation of PTPs is often complex, particularly in the tax year in which you sell "units" of the PTP (notice that they are called units and not shares). Thus, for years where there is a sale of PTP units, we often recommend that customers use a paid tax professional for accurate reporting. However, in those tax years where the investor simply owns the PTP and collects cash distributions from it, the tax income tax reporting of Schedule K-1 is straightforward enough, and is well within the capability of a do-it-yourself project.
We even have a short TurboTax FAQ page to help customers find the right place to enter their Schedule K-1. Here is the link:
https://ttlc.intuit.com/questions/1900938-where-do-i-enter-a-k-1-that-i-received
In addition, you may wish to read the following (short) tax materials on PTPs. While these documents are not comprehensive, and don't cover all relevant aspects of PTP taxation, they are a good place to start:
https://www.mlpassociation.org/mlp-101/basic-tax-principles/
https://www.morganstanleyfa.com/public/projectfiles/598f7625-f3c1-48f4-bc7e-5802d979cd48.pdf
As an investor in PTP units, you should be aware of the basic tax principles underlying them (and these materials will help that understanding). It will help you to make better PTP ownership decisions with respect to buy, sell, or hold.
Returning to your original question, and concluding this answer, you should just ignore the distributions amount shown on your 1099 for now. Instead, please wait for the Schedule K-1 to arrive directly from your PTP. It is the Schedule K-1 that you will enter into TurboTax.
Thank you for asking about this important topic; and good luck with your future investing.
