Hello praveens007!
For generating INTERVAT, Belgian legal entity must have Enterprise number with valid date. To create Enterprise number:
1) Create Registration type for Enterprise number defining Belgian country (Organization administration/ Global address book/ Registration types)
2) Create Registration category for registration type created in before point defining registration category option 'Enterprise ID (COID)' (Organization administration/ Global address book/ Registration types)
3) From Legal entities, select Belgian legal entity and primary address to select More options and then Advanced. In Registration ID tab, add new one to select Registration type for Enterprise number and introduce company enterprise number that should following format: BTW BE 9999.999.99.
Assure that Effective date of Enterprise number (General tab) is former than any date include in the period that you are generating for INTERVAT.
Hope this helps you to resolve the issue.
Regards,
Natalia.
