Model Verify Tool 
Simulation tab → Simulate container → Interactive/Scripted Simulation Dialog Box → Model Verify Tool
Tools → Model Verify
Tools → Model Verify
Checks for error conditions in your model, such as misaligned joints, unconstrained parts, or massless parts in dynamic models, and alerts you to other possible problems. It is a good tool to use periodically as you add detail to or refine your model.
The Model Verify tool calculates the number of Degrees of freedom (DOF) in your model. It gives you two separate calculations:
■The Gruebler count, which is a rough estimate of the number of DOF in your model using the Gruebler equation to add up the number of DOF introduced by parts and to subtract the number of DOF removed by constraints.
■The actual number and type of movable parts and constraints in the model that Adams Solver determines after it formulates your model’s equations of motion.
It issues warning messages to alert you to any inconsistencies in your model. For example, inconsistencies can occur when you have not defined connections properly or parts are free to move but have no mass properties assigned to them.
The verification results appear in the Information Window.
Learn about Verifying Your Model.