Re: Need Unique ID for a batch of messages

You just need to promote a value into the message context.

Here are the steps at a high level:

1. Create a property schema with a  MessageContext type property
2. Create a custom pipeline component to promote your batch id into this property
3. In code, create a batch id and promote it
4. Create a custom pipeline using your new pipeline component.

I think I have bits and pieces of all this on this site.  Look at some of the BizTalk 2004 Samples.  The hardest part is the custom pipeline component.

To give you an idea, this is probably 8 hours of work.