Solution : https://service.sap.com/sap/support/notes/105544 (SAP Service marketplace login required)
Key words :
system generates error message tk686, missing additional key words transport, transport/import drilldown reports, transport request headers, attached program corrections, program error, missing comments, errors occur, 'forms' field, dependent objects
Related Notes :
128862 | INFO: Transport Customizing CO-PA in 4.0A/B |