Computerized Method and System for Enabling User Located Production of a Mixture of Substances

The invention relates to user located production of a mixture of substances (3). Stored (S1) in a computer database (1) is assignment information (52) relating to a plurality of storage assemblies (51), each storage assembly comprising a plurality of storage elements, each storage element having stored a substance of a particular type, the assignment information (52) providing for each storage element an assignment of a property of the respective storage element to the substance stored in the respective storage element. Determined is first assignment information (52′) of a first storage assembly (51′) being arranged in a user located production device (2). Provided is a mixture definition (3′) defining the mixture of substances. Determined is production information based on the first assignment information (52′) and based on the mixture definition (3′), the production information including a definition of a subset of storage elements of the first storage assembly (51′), the production information enabling the production of the mixture of substances (3) with the user located production device (2).