Solution : https://service.sap.com/sap/support/notes/723947 (SAP Service marketplace login required)
Key words : 
message_type_x solution import aba 6, lt_guid =cl_com_prd_lh_key _mass_service=>generate_keys_by_attributes, lt_guid type com_prd_tt_lh_key_guid_attribs, terms message x000, insert initial line, lt_attr type mdm_tt_prd_key_defi_0000000000, it_key_attributes_int = lt_attr    iv_key_type           = '0000000000', required table entry, correction report creates, missing table entry
Related Notes : 
       
| 872533 | FAQ: Middleware |