CRM 2011 Creating Case

Question

We are using CRM 2011 on-Premise. Some of user could not create case and getting error like:

but these users have right to create and case.

anyone has an idea please share with me.

Answer 1

Is this case entity using any plugins/workflows (which triggers on create of a case record) which is accessing another entity, where these users don't have read/write access.

Hope this helps!!!.