Solution : https://service.sap.com/sap/support/notes/841218 (SAP Service marketplace login required)
Key words :
specification managementyou open, start transaction se37, yesuse transaction se37, i_user_exit_marks_at_tree_chng type spec, i_marktab type spec, i_nodetab type spec, c14f function group, terms ehs32sp10psehs2004sp08ps reason, c103_property_tree_call function module, c14f_marks_at_tree_chng_exit function module
Related Notes :
| 926340 | Missing val assignmts in "Substance with Values Assigned..." |
| 902011 | Error when inheriting specification data |