3409727 - Update a node in a Custom Business Object action does not work - SAP S/4HANA Cloud Public Edition

Updating a custom business object node in an action created in the Custom Business Object application using the "update" method does not work.

SAP S/4HANA Cloud Public Edition

1. Accessing the Custom Business Object app

2. Creating a custom business object

3. Defining fields and key fields

4. Creating an action called "update"

5. Adding logic:

DATA ls_data TYPE yy1_CBOABC.
DATA lv_node_key TYPE yy1_kr_cboabc.
lv_node_key = CBOABC-keyfield.
DATA(lo_node) = write->get_root(
      business_object_id = 'YY1_CBOABC'
      key                = lv_node_key
    ).

lo_node->get( IMPORTING data = ls_data ).

ls_data-field1 = 'String'.

lo_node->update(
    CHANGING
      data = ls_data
  ).

6. Notice the node field "field1" does not get changed.

This is a limitation of the framework where the instance on which a determination/action is called on cannot be modified by the determination/action logic.

 The Custom Business Object write API is intended to modify other business object instances.

The Custom Business Object application implements a workaround for modifying the determination/action instance by changing the value of the changing parameter.

For example, CBOABC-field1 = 'String'.

SAP Help Portal - Code Samples to Write Data from Determinations or Actions to Custom Business Objects

SAP Help Portal - Setting the Lifecycle Status to Purpose Completed with an Action

cbo, custom business object, action, update, node, s/4hana cloud, s4hc, sap s/4hana cloud, public cloud, key user extensibility , KBA , BC-SRV-APS-EXT-BO , Custom Tables and Nodes , Problem