Monitoring a connection between computer system layers includes detecting that an aspect is being modified in a transactional layer of an enterprise resource computing system that further includes an analytical layer configured to receive data from the transactional layer. In response to the detection, it is determined whether at least one of several decoupling components, configured for use by the analytical layer in receiving the data, is implicated by the aspect. A predefined output is made to a user based on the determination. An enterprise resource computing system includes a transactional layer and an analytical layer, and decoupling components for use by the analytical layer in receiving the data. Upon an aspect of the transactional layer being modified, a predefined output is made to a user based on a determination of whether any of several decoupling components is implicated by the aspect.