The schemeID attribute specifies if it is a VAT number or another national number. The possible values are: VAT_Number and National_Number.

Fixed value
National_Number
Code lists
EconomicOperatorIdentifierType
Rules
Identifier/Error message Flag
PEPPOLBIS-ESPD-RES-B06901
Attribute 'schemeID' MUST contain value 'National_Number'
fatal