Many messages used in business processes contain references to unstructured data. For example, an insurance business process executing a claim request can reference a picture of a damaged vehicle. To include such unstructured data in Process Developer, you can attach a picture, document, spreadsheet, or other file type to a variable in a BPEL process.

You can receive, send, and copy attachments from one variable to another. You can also copy the contents of an attachment or attachment property to a process variable by using custom functions.