1. A method implemented by a computing system in response to execution of program code by a processor of the computing system, comprising: receiving an instruction to add an extension field to a node of a business object object model; identifying at least one multi-dimensional analytical view object model of multi-dimensional analytical view object models, each multi-dimensional analytical view object model including a reference field having properties that indicate a path to the node of the business object object model; determining at least one report of reports associated with the identified at least one multi-dimensional analytical view object model; receiving a selection of the determined at least one report of the reports; extending the at least one multi-dimensional analytical view object model of the multi-dimensional analytical view object models associated with the report based on the extension field, wherein the extending the at least one multi-dimensional analytical view object model of the multi-dimensional analytical view object models comprises: creating an extension multi-dimensional analytical view object model based on the extension field, wherein the extension multi-dimensional analytical view object model and the at least one multi-dimensional analytical view object model of the multi-dimensional analytical view object models are instances of a same multi-dimensional analytical view metamodel; extending a union multi-dimensional analytical view object model associated with the business object object model, with the at least one multi-dimensional analytical view object model of the multi-dimensional analytical view object models, and with the selected report; and extending the selected report based on the extension field.