There is no mentioning about 10.7.0SP3 in following page, but what kind of handling would it be?
"CA APM Release and Support Lifecycle Dates"
APM 10.7.0. SP3
The EOS of APM 10.7.0 including SP3 is December 31th 2023.
Please see the following page for details.
"CA Application Performance Management (APM), CA Introscope, and CA Introscope to CA Application Performance Management Upgrade R 10.7. X End of Service Announcement"