Red cross (❌) symbols appear when a point on a photo drawing cannot be matched to a point on the model. This often happens when you pick a point in the sky or the ground.

If this happens, you don't need to create a new drawing! But you won't be able to save your annotation until the drawing is corrected.

To move a point, you can right-click and drag the point to another point on the photo.

Once the the drawing is valid, the Finish button will appear.