Use of Upadate data and Change dimension activity

Hi ,

Deliveries in workflows must have a target mapping configured, in almost all cases to nms:recipient.

To use the target mapping, the transition feeding the delivery must be using the targeting dimension in the mapping (nms:recipient). If it's not, use change dimension activity to set it, via the change dimension field in the activity.

Also, please refer below link for more information

Targeting activities