CWWIC0309W The "transient" modifier is not allowed in custom snippets.
Explanation
Custom snippets cannot contain "transient" modifiers.
User response
Remove the "transient" modifier from the custom snippet and run the migration again, or set the "Warn in case of Java parsing errors" flag and modify the resulting snippets in the Business Process Execution Language (BPEL) components or map components so that they no longer use "transient" modifiers.