Hi @Ankitha12 , the only way to export such customized report is via writing a Script.
Use search API in Python/Powershell OR whichever Programming language you are comfortable with.
Iterate through the response and write logic in the code to append only those rows which has entitlement source name listed as “Application ABC”.
You could schedule this code to run on client’s server and send the report to any client side email address using client’s smtp server.
Seems too much effort when we can just filter the exported data from Search Export.