Deals: Warning Icons
The yellow triangle icon means business development is being done with a particular company. This informs you and your team that the company is actively on a deal. Not only is the company apart of the deal but you will notice the yellow warning icon will also appear next to your contact's names who currently work at those companies. This allows your firm to keep track of your business development efforts.
Once a target is added to a deal, whether it be a person or company, the warning sign - triangle will appear next to the name as seen below.
A Person targeted within a deal:
A Company targeted within a deal: