The technology performs obligations fulfillment monitoring. An input data stream of data messages is received including transaction data and reference data, obligation control logic, and a set of obligation parameters associated with the obligation control logic. An event data processor processes the input data stream using a current version of the obligation control logic and the set of obligation parameters. Subsequently, the event processor receives information to implement and execute obligation control logic that is dynamically-modified and different from the current version of the obligation control logic. The event processor generates and outputs an obligation fulfillment message based on the dynamically-modified obligation logic and transmits to an interested entity.