1. A computer program product, the computer program product comprising a non-transitory computer readable storage medium having program code embodied therewith, the program code executable by at least one processor to perform: obtaining source system metadata containing source contextual values of a source system that are based on user settings, system configuration, and data processing configuration, wherein the source contextual values indicate how source attributes are to be processed in the source system; obtaining a structural transformation map between the source system and a target system, (1) that has an associated structural transformation map schema definition, (2) that maps a source schema of the source system to a target schema of the target system, (3) that includes source attribute to target attribute pairs, and (4) that includes additional data used to map data from the source system to the target system; generating, from the structural transformation map, a simplified map (1) that is a simpler data structure of the structural transformation map, (2) that includes the source attribute to target attribute pairs for structural mappings, and (3) that does not include the additional data, by sending the structural transformation map through a map simplifier; generating a metadata transform input schema definition from the associated structural transformation map schema definition and a generic metadata schema definition that provides a generic mechanism for defining data for business functions of various types; generating a first document that includes combined data, that conforms to the metadata transform input schema definition, using data from the simplified map and the source system metadata; generating a second document containing target contextual values of target system metadata that map to the source contextual values using the combined data and a contextual metadata transformation map, wherein the target contextual values indicate how target attributes are to be processed in the target system; and dynamically configuring a business function of an application of the target system using the target contextual values.