Generate X12 999 Implementation Acknowledgment Last updated: 2023-04-24

var edi = File.OpenRead(Directory.GetCurrentDirectory() + @"\..\..\..\Files\X12\PurchaseOrderInvalid.txt");
var processedMessages = new ConcurrentBag();

var settings = new AckSettings
{
	AckHandler = (s, a) =>
	{
		var tsTa1 = a.Message as TSTA1;
		var ts997 = a.Message as TS997;

		if (tsTa1 != null)
		{
			// a.Message is TA1
		}

		if (ts997 != null)
		{
			var allFailed = ts997.AK2Loop1.Where(f => f.AK5.TransactionSetAcknowledgmentCode_01 == "R").ToList();
			var allAccepted = ts997.AK2Loop1.Where(f => f.AK5.TransactionSetAcknowledgmentCode_01 == "A").ToList();

			foreach (var failedMessage in allFailed)
			{
				if (processedMessages.Contains(failedMessage.AK2.TransactionSetControlNumber_02))
				{
					failedMessage.AK5.TransactionSetAcknowledgmentCode_01 = "E";
				}
			}

			var ack = AckBuilders.BuildAck(a.InterchangeHeader, a.GroupHeader, ts997, AckVersion.X12_997);
			Debug.Write(ack);
		}
	},
	MessageHandler = (s, a) =>
	{
		if (a.ErrorContext.HasErrors)
		{
			//  In case we decide to process the message anyway, preserve the control number
			processedMessages.Add(a.Message.ErrorContext.ControlNumber);
			//  Process the invalid message

			// Reject message
			// Log/report it
			// Inspect MessageErrorContext for the validation errors
			var errors = a.ErrorContext.Flatten();

			Debug.WriteLine("Message {0} with control number {1} is invalid with errors:", a.ErrorContext.Name, a.ErrorContext.ControlNumber);
			foreach (var error in errors)
			{
				Debug.WriteLine(error);
			}
		}
	},
	AckVersion = AckVersion.X12_997,
	// Turn off AK2 for valid messages to reduce size
	GenerateForValidMessages = false
};

using (var ackMan = new Plugins.Acknowledgments.X12.AckMan(settings))
{
	using (var ediReader = new X12Reader(edi, "EdiFabric.Examples.X12.Templates.V4010"))
	{
		while (ediReader.Read())
			ackMan.Publish(ediReader.Item);
	}
}