For data updates from the back-end or the client insert the custom service in the MMW_FLOW_INBOUND_BACKEND or MMW_FLOW_INBOUND_CLIENT_AV flow definition respectively.
In the child data object, create a custom service.
For data updates from the back-end or the client insert the custom service in MMW_FLOW_INBOUND_BACKEND or MMW_FLOW_INBOUND_CLIENT_AV flow definition respectively.