This falls under SharePoint upgrade but I have seen clients creating sites using Fabulous forty templates in the same database where PWA resides and it breaks the Microsoft Project server 2013 upgrade. So, run below command to verify if Fab 40 templates are installed in Projection Server 2007 environment or not:

stsadm -o enumtemplates > c:AllSiteTemplates.txt

– If above command doesn't bring anything, follow below footstep to notice information technology out:

run the SPSFarmReport tool and in the "Solutions" section of the report generated past the tool, see if you have below solution:

Applicationtemplatecore.wsp.

If yes, Fab 40 templates are installed in the farm.

I listed the Fab twoscore template names for ready reference:

· Absence Request and Vacation Schedule Management absence#0

· Budgeting and Tracking Multiple Projects projmulti#0

· Problems Database bt#0

· Call Center callcenter callcenter#0

· Change Request Management        projchange#0

· Compliance Procedure Support Site comproc#0

· Contacts Direction CM#0

· Document Library and Review DR#0

· Event Planning eventplan#0

· Expense Reimbursement and Approval exreports#0

· Assistance Desk-bound helpdesk#0

· Inventory Tracking Information technology#0

· Information technology Team Workspace itteam#0

· Job Requisition and Interview Management JRIM#0

· Knowledge Base of operations kb#0

· Lending Library ll#0

· Concrete Asset Tracking and Management patm#0

· Project Tracking Workspace projsing#0

· Room and Equipment Reservations RER#0

· Sales Atomic number 82 Pipeline ST#0

If they are installed, the next task is to find out if these templates are used in creating any sites nether PWA site collection. If yep, let your customer know that they are deprecated and in that location is no upgrade path for those. Once your client agrees, merely delete the sites created using these templates(Be sure to take a back up outset) and then perform the upgrade.