The head of Mission or authorised representative must co-sign the 136 F for whether for the private/personal use and the official use of the diplomatic mission. Moreover, the 136F form must be stamped with the stamp/seal of your diplomatic mission.
For more specific information, you can always reach the FPS – Belgian Finance - Administration of Customs and Excise:
- Boulevard Roi Albert II 33, bte 372-1030 BRUXELLES
- T : +32 (0) 257 633 28
- E : firstname.lastname@example.org