Specifying metadata to be used for post-processing documents You can use any of the Process variables as metadata. Metadata can only be specified on Document End level. The variables that you will use for enveloping and sorting must be specified as metadata when storing the documents. To specify metadata 1 In the Runtime window, open the connector settings for the output connector to be used. 2 Click Document End and Metadata Keys. 3 Click Add new Item and enter the values. The metadata key can be any variable defined in the Project, for example the customer ID. 4 Click OK.