Abstract: A message ordering and idempotency enforcement process utilizing at least one computing device ensures the ordered processing of asynchronously received messages and avoids reprocessing of messages that have already been successfully processed, the process receives a message identified by entity ID, message sequence number and content. The process identifies the message according to the entity ID, message sequence number and content and selects selected views of data from a view data repository applicable to the message and then inserts the message in a buffer according to message sequence number for execution of messages in message sequence order. The process then recording the last message processed according to message sequence number for an entity ID within each selected view in the view data repository.