These attributes are common to all IK solvers.
Specifies the maximum number of iterations the IK solver will take in calculating how the end effector reaches the IK handle. If the Tolerance cannot be meet after Max Iterations, the IK solver will stop. Default is 2147483647. A large value such as the default value means that the IK solver will typically stop when the Tolerance is met.
Specifies the precision sought by the IK solver in calculating how the end effector reaches the IK handle. Once the IK solver meets the Tolerance, the IK solver stops calculating. Default is 0.000.