Solution : https://service.sap.com/sap/support/notes/527925 (SAP Service marketplace login required)
Key words : 
-> dangerous goods management -> dangerous goods documents / edi ->, correponding exit function module exit_sapldg70_005 serves, dangerous goods master record exists, sap standard function module 'dg70_chk_ctry_mot', sap standard function module dg70_chk_ctry_mot, relevant dangerous goods master record, deactivate customer-specific customer exits, define dangerous goods regulation '49_cfr', exit module exit_sapldg20_001 serves, dangerous goods management corresponds
Related Notes : 
       
| 1157472 | FAQ: Dangerous goods problems after upgrade/EHS installation | 
| 836139 | Check on overlapping validity areas with collective MTC | 
| 692664 | Dangerous goods: Upgrade EH&S 2.2B to higher EH&S versions |