Symptoms

Client has a workflow that works fine in DEV but is not working in QA or PROD. Workflow runs, creates the SharePoint site but then throws an error: "The web site is already in use"

 

Diagnoses

Possible issues with the template, as the host server log has "file or arguments not valid for site template" errors.

 

Resolution

Website issue was resolved as it was related to a CRM process on clients end. The "file or arguments not valid for site template" error was fixed by entering the site template in the workflow as a prefilled parameter with no GUID involved. The issue was caused by a mismatch of the GUID of the SharePoint template as it was brought over from a different environment.