A Fix for "You don't have permission to create items on this site: https://yoursite.sharepo

This post provides a solution to errors like:

"You don't have permission to create items on this site: https://centennialsoftware.sharepoint.com/sites/pwa. Change your default PWA site or request permission to this site."

Steps

Step #1: Go to https://www.office.com/

Step #2: Sign in

Step #3: Click Admin

Step #4: Click Show all

Step #5: Click SharePoint

Step #6: Click Active sites

Step #7: Click Project Web App

Step #8: Click Add or remove admins

Step #9: Add or remove admins for this site

A) Enter the name of the person getting the error

B) Click Save

Reference

Microsoft Project Web App icon from [link]