The present invention relates to a method for transmitting data, a subscriber terminal, a computer program product, and a communications system that provides a sender of data or of a message with additional possibilities for sending data with a higher degree of flexibility for the error-free adaptation of every combination of data and data formats to a given communications system and/or provides the sender with an MMS user application. To this end, a data type and/or data format conversion (KONV) is carried out according to a profile of the recipient (B), whereby a respective reference (LK) to the maintaining of the validity of this reference (LK) is accordingly changes in the data and/or between different data elements of the data type and/or data format conversion (KONV).