A system for interfacing between one of a plurality of service provider, SP, trusted service managers, TSM, (103, 203, 303, 403, 503, 603, 703, 803) and one of a plurality of secure elements, the system comprising: at least one memory; and a processor coupled to the at least one memory, the processor being operable to: receive (252, 452), from a service provider trusted manager, SP TSM (103, 203, 303, 403, 503, 603, 703, 803), over a communications network, a first request including a mobile subscription identifier; query (254, 454) the at least one memory for secure element data including a secure element identifier corresponding to the mobile subscription identifier; transmit (258, 458) the secure element data to the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network; receive (258, 458), from the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network, a second request based on the secure element data; and transmit (260, 460, 462), over a mobile network, a third request, based on the second request, to a central security domain (504, 604, 704, 804) on a secure element (106, 201, 301, 401, 501, 601, 701, 801) corresponding to the secure element data, wherein the mobile network is selected from a plurality of mobile networks, and determined based on the secure element data queried from the at least one memory. at least one memory; and a processor coupled to the at least one memory, the processor being operable to: receive (252, 452), from a service provider trusted manager, SP TSM (103, 203, 303, 403, 503, 603, 703, 803), over a communications network, a first request including a mobile subscription identifier; query (254, 454) the at least one memory for secure element data including a secure element identifier corresponding to the mobile subscription identifier; transmit (258, 458) the secure element data to the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network; receive (258, 458), from the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network, a second request based on the secure element data; and transmit (260, 460, 462), over a mobile network, a third request, based on the second request, to a central security domain (504, 604, 704, 804) on a secure element (106, 201, 301, 401, 501, 601, 701, 801) corresponding to the secure element data, receive (252, 452), from a service provider trusted manager, SP TSM (103, 203, 303, 403, 503, 603, 703, 803), over a communications network, a first request including a mobile subscription identifier; query (254, 454) the at least one memory for secure element data including a secure element identifier corresponding to the mobile subscription identifier; transmit (258, 458) the secure element data to the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network; receive (258, 458), from the SP TSM (103, 203, 303, 403, 503, 603, 703, 803) over the communications network, a second request based on the secure element data; and transmit (260, 460, 462), over a mobile network, a third request, based on the second request, to a central security domain (504, 604, 704, 804) on a secure element (106, 201, 301, 401, 501, 601, 701, 801) corresponding to the secure element data, wherein the mobile network is selected from a plurality of mobile networks, and determined based on the secure element data queried from the at least one memory.