Deletes all versions of a solution and the <code>Solution</code> object itself. Before deleting a solution, you must delete all campaigns based on the solution. To determine what campaigns are using the solution, call <a href="https://docs.aws.amazon.com/personalize/latest/dg/API_ListCampaigns.html">ListCampaigns</a> and supply the Amazon Resource Name (ARN) of the solution. You can't delete a solution if an associated <code>SolutionVersion</code> is in the CREATE PENDING or IN PROGRESS state. For more information on solutions, see <a href="https://docs.aws.amazon.com/personalize/latest/dg/API_CreateSolution.html">CreateSolution</a>.