Solution : https://service.sap.com/sap/support/notes/1321676 (SAP Service marketplace login required)
Key words :
message - 137 message short text - error, specific sap erp system, prerequisites function module trex_text_to_xstring, converting html string, base 64 encoded string, workflow pattern reason, message class field, change messages screen, terms string conversion, message class s_osp_wf_msg
Related Notes :
| 1028938 | Workflow: Composite note |