NAcks or Negative Acknowledgments are small SOAP messages that exist in BizTalk when a messaging error occurs. This happens when adapters fail, pipelines fail, messages do not match subscriptions, ect. These messages can be subscribed to and a business process can be written to react to all of these messages or specific error codes. This sample Orchestration shows how simple it is to catch these messages. To subscribe to a NAck, just create a subscription to: BTS.AckType = NACK. It’s that easy!...