BizTalk Tips and Tricks – Promoting properties from a collection.

Only non-repeatable fields can be easily promoted from within the schema editor. At the end of the day however it’s simply an xpath statement. In rare cases, if you need to promote a repeatable field from a collection, you can simply modify the xpath contained within the schema and change the xpath to point to a specific index within the collection. Internally, BizTalk simply applies the xpath to the message when its time to promote the data. There is no reason why the xpath couldn’t be restructured to evaluate to a field within a collection at a given index (such as 0). The need might be rare, but it can be done if needed.