schema's input validation displays the warning message "incorrect type. Expected "string"" when creating/editing a helm release.
In my testing so far, this message seems to appear for items whose schema has an array type or additionalProperties. 

    1.Login to the web console for Developer  
    2. Select Helm on the left. 
    3. Create a repository where your custom schema is placed (You can use the test module myhost-0.1.0.tgz uploaded in case 03880130. )
    4. Create Helm Release 
    5. Clear the values in the yaml view and enter the same, or modify one of the values in the yaml view. (retires : 2 -> 3)
You should see the message "incorrect type. Expected "string"".

A warning message is raised for valid schema. 

    The warning message should not appear. 

1. test module=>     myhost-0.1.0.tgz : https://attachments.access.redhat.com/hydra/rest/cases/03880130/attachments/d6a63c89-11b6-4d82-a2bd-125361d7c4e3?usePresignedUrl=true
2. Warning screen shot: internaltest-incorrecttype-host.png  
https://attachments.access.redhat.com/hydra/rest/cases/03880130/attachments/b5960d29-b62b-44a7-a2f3-20971db56e8e?usePresignedUrl=true