1. A method comprising: initiating a feeder class, the initiated feeder class transferring, through a processing device, data field identifiers included in a function executed at a business intelligence system, the function manipulating data stored in an enterprise resource planning system; selecting a subset of manipulated data and a subset of data included in a data field of the transferred data field identifiers; applying the selected subsets to a business planning function to calculate a performance metric of the business planning function, the business planning function representing a step in an automated business process executed by the enterprise resource planning system; and automatically updating the calculation to reflect a change to the selected subsets of data.