A method to enforce processing of management messages by a security module associated to a multimedia receiver configured to receive access controlled multimedia services, the management messages received from a managing center by the multimedia receiver and being processed by the security module, the method comprising steps of: receiving by the security module at least one global management message (G-EMM) addressed to all multimedia receivers operated by the managing center, tracing by the security module the processing of said at least one global management message (G-EMM) by setting up a state in a memory of the security module, the state defining a successful processing of the at least one global management message (G-EMM) while an unsuccessful processing of said at least one global management message (G-EMM) results in an absence of the state, receiving by the security module at least one positive addressing management message (PA-EMM) specifically addressed to a predefined group of multimedia receivers including said security module, said predefined group being part of the multimedia receivers operated by the managing center, the at least one positive addressing management message (PA-EMM) comprising an identifier of the security module associated with commands and parameters for setting up in said security module access rights to multimedia services, checking, by the security module, anterior processing of the at least one global management message (G-EMM) through the state set up during tracing of the processing of the at least one global management message (G-EMM), processing the at least one positive addressing management message (PA-EMM) only if the state set up during tracing of the processing of the at least one global management message (G-EMM) indicates a successful processing of the at least one global management message (G-EMM), thereby allowing the multimedia receiver access to multimedia services, the state being reset only after processing a last one of the at least one positive addressing management message, said state being renewed after successful processing of a next at least one global management message. receiving by the security module at least one global management message (G-EMM) addressed to all multimedia receivers operated by the managing center, tracing by the security module the processing of said at least one global management message (G-EMM) by setting up a state in a memory of the security module, the state defining a successful processing of the at least one global management message (G-EMM) while an unsuccessful processing of said at least one global management message (G-EMM) results in an absence of the state, receiving by the security module at least one positive addressing management message (PA-EMM) specifically addressed to a predefined group of multimedia receivers including said security module, said predefined group being part of the multimedia receivers operated by the managing center, the at least one positive addressing management message (PA-EMM) comprising an identifier of the security module associated with commands and parameters for setting up in said security module access rights to multimedia services, checking, by the security module, anterior processing of the at least one global management message (G-EMM) through the state set up during tracing of the processing of the at least one global management message (G-EMM), processing the at least one positive addressing management message (PA-EMM) only if the state set up during tracing of the processing of the at least one global management message (G-EMM) indicates a successful processing of the at least one global management message (G-EMM), thereby allowing the multimedia receiver access to multimedia services, the state being reset only after processing a last one of the at least one positive addressing management message, said state being renewed after successful processing of a next at least one global management message.