In TDM Portat, Self Service Catalog-->All projects can be unchecked
Functionality is by design
Test Data Manager 4.5, 4.6 and 4.7
By default, TDM Portal-->Sel Service Catalog--All projects checkbox is checked by design. To make it as unchecked by default, need to open an enhancement request in TDM Community.
Here are few workarounds.
. In TDM Portal-->Self Service Catalog, can uncheck "All Project" manually and it is retained if different projects are selected.
. Restrict the users access on projects and that should also help.
Open an enhancement request in TDM community and the knowledge article at https://comm.support.ca.com/kb/How-to-Submit-an-Enhancement-Request-for-Test-Data-Manager/KB000009611 will provide information.