Ansys 做螺栓接触分析的时候出现的7个错误和警号，求大神解决~

Ansys 做螺栓接触分析的时候出现的7个错误和警号，求大神解决~
1. The behavior of contact elements specified by real constant 27 are not
consistent. Some of elements belong to a rigid surface, while others
belong to a deformable surface.
2. ANSYS could not find attached solid element for contact element 34461.
Check the element connectivity data.
3. Some target elements on target surface specified by real constant set
16 belong to symmetric contact (e.g. 15), some do not.
4. The closed gap/penetration may be too large. Increase pinball if it is
a true closed gap/penetration. Decrease pinball if it is a false one.
5. There are 100 small equation solver pivot terms.
6. The value of UY at node 31190 is 1.113222667E+10. It is greater than
the current limit of 1000000. This generally indicates rigid body
motion as a result of an unconstrained model. Verify that your model
is properly constrained.
7. *** MESSAGE CONTINUATION ---- DIAGNOSTIC INFORMATION ***
If one or more parts of the model are held together only by contact
verify that the contact surfaces are closed. Also make sure that
there are constraints (or friction) in the sliding direction even if
no load is applied in that direction. You can use the CNCHECK command
to check the initial contact status in the SOLUTION module.