Solution : https://service.sap.com/sap/support/notes/1044028 (SAP Service marketplace login required)
Key words :
similar if_wd_context=>add_context_attribute_change, check mandatory attributes, symptom cl_wdr_context_node_info=>follow_path, relevant support package, support package 11, support package, support package 12, delegate_to_original = abap_false, incorrect entry, program error
Related Notes :
| 1079314 | SRM 6.0 SP03: Notes to be applied on Netweaver 2004s SP12 |