Tasks that produce output data (for example, declare output types in the task group definition) must ensure that their custom update routine assigns output data.

The XML file prepares empty data objects representing task outputs. You must only set the correct transfer properties that downstream consumers interrogate. To determine which properties you must set, see Appendix C: Data Transfer Types.

For example, a material transfer to a downstream task Engineering Data must set the property DataReference TransferFile on a MatML31 data object to the file reference of a registered matml-formatted XML file, all completed during the update routine.