12 14 16 when a exploiter product is to be installed or its configuration data has to be updated a resulting change of system configuration can cause problems as the exploiter products e 1 en have concurrent requests to the resources of the operating system according to the present invention said plurality of requests are bundled in a request repository 18 said requests are depicted only fractionally in fig1 and are denoted by r 11 r 1 j rn 1 rnl advantageously said requests are defined by using xml language and the request repository being a ldap based directory thus with a usual browser tool those requests can be made visible to a system administrator in said repository 18 requests are stored advantageously in a tree structure generally each request has one or more attributes which have to be filled with associated values in order to define said request for example a request which is intended to assure the identity of an user in the system may comprise the following attributes and values request attributes objectclass bindrequest bindrequest security 1 configurationid parallelsysplex requestedservice racfsecurity requestedsupportname assure_user requestparameters userid thel requestparameters group d 1311 requeststatus requested returncode 0 reasoncode 0 minsupportversion 1 0 further attributes can advantageously be added as for example an attribute specifying if the service of the specified request is required for the system to run or if it is only optional the above request definition shall be understood only as an example which is implemented in an object oriented programming language generally the type the number and the values of any attributes.