In the solver editor, in a CH or LS solver phase, allow specifying the exact move selectors used. Most users do this (especially on non-trivial use cases).

Don't allow to select tailChainSwapMoveSelector if there is no chained variable in the data model.
http://docs.jboss.org/optaplanner/release/latest/optaplanner-docs/html_single/index.html#moveAndNeighborhoodSelection

Here's that list currently:

• 7.2.1. changeMoveSelector
• 7.2.2. swapMoveSelector
• 7.2.3. pillarChangeMoveSelector
• 7.2.4. pillarSwapMoveSelector
• 7.2.5. tailChainSwapMoveSelector or 2-opt (chained variables only)
• 7.2.6. subChainChangeMoveSelector (chained variables only)
• 7.2.7. subChainSwapMoveSelector (chained variables only)