As a reminder, the TOTAL Diplomatic Card is reserved exclusively for natural persons and legal persons who are eligible for the exemption from the excise duty and from the VAT, which results in a tax-free fuel year quota/allowance (cf. Am I eligible for the TOTAL tax-free fuel?)
Only if you comply with said requirement, you can subscribe as a natural person or a legal person. Complete the requested information thanks you your Belgian ID-cards, issued by the Belgian Protocol Directorate. After, provide TOTAL the requested hard/original documents: SEPA direct debit form and the 136F declaration.
Upon endorsement of your 136 F form by the Belgian Administration of Customs and Excise, you will receive your TOTAL Diplomatic tax-free fuel card(s) within maximum five business days.