Abstract: In order to create an expert system through which the solution requests, which are posed to the expert system, can be arranged in a simple and especially automatic manner, it is suggested that an administrative unit with a requester interface for communicating with solution requesters be provided, whereby the solution requesters can be connected to the administrative unit via a communication network, whereby further a provider interface for entering solution offers by the solution providers and a database are provided and in this database solution requests are stored in a given specification and solution offers are also stored with a given specification, whereby the administrative unit can carry out an analysis of solution requests and solution offers and on finding a possible solution of a solution provider on the solution request, the administrative unit establishes a contact between the solution requester and the solution provider.