Release : 15.6.1
Component : CA PPM RESOURCE MANAGEMENT
1. If the users are financially enabled, the resource ID can't be changed.
2. If they aren't yet financially enabled, then it's okay to remove the apostrophe (https://ca-broadcom.wolkenservicedesk.com/external/article?articleId=8435)
See KB: 8435 - Clarity: XOG Write Update for Resources with Apostrophe character fails (Defect fixed in 15.4)