When synchronizing data between two systems, occasionally, data for a child object arrives at the target system slightly before the parent object creating a referential integrity error. Ideally, the child object should be resent to the target after the parent object arrives. The community at MuleLearning has developed a delayed reprocessing algorithm using queues and a scheduler. Developers must take special care with the queues' configuration to successfully reprocess errant messages on a time delay. In this session, Tim will build the error reprocessing solution from scratch so that all meetup participants can walk away with a working delayed reprocessing solution.