MEP (Multiple Enabled Profiles) functionality relies on a key feature: MANAGE LSIs
MANAGE LSIs Command #
Management Logical Secure Element Interfaces (LSIs) is a command defined in the ETSI specifications that allows for the management of multiple profiles on an eUICC.
This command enables the activation, deactivation, and switching between different profiles stored on the eUICC.
See https://www.google.com/search?q=%22MANAGE+LSI%22+site%3AETSI.org for the ETSI specifications.