When I Set Sharing Rules for Training Coordinator and Projects i got the error message "Challenge Not yet complete... here's what's wrong: The sharing rule did not behave as expected. "How can I fix this error?Please answer anyone ASAP.

When I Configure appropriate organization-wide defaults i got the error message "Challenge Not yet complete... here's what's wrong: The organization-wide default for the Project custom object was not configured correctly "How can I Configure correctly

when i creating a guest admin and deactivate it i got the messge"Challenge Not yet complete... here's what's wrong: The user's profile was not set to System Administrator "How can i set the administrator

In creating object relationship challenge unfortunately i added master detail "capagain" instead of "camsite" How to change mater detail..please reply asap

Am beginer ansd created new application but when i am check thae challenge i got the msg "Challenge Not yet complete... here's what's wrong: No tab named 'Vehicles' was found " wht is solution for tht.where i did mistake please explain anyone