Sometimes commissions are included in the security price when a trade is made

Sometimes we have trades that are booked onto our brokerage statement that have the commissions included in the price of the security (i.e. the commission amount is not reported as a separate figure).

[Note: For an example of why this happens, consult my Interactive Brokers blog, specifically this post.]

As I understand it, this will not cause a problem. Commissions on trades are added to the cost basis of a given security position. Not breaking the commissions out into a separate figure will evidently not cause a problem in the tax reporting for the partnership. A qualified tax accountant should be consulted on this for your own accounting books and procedures.