What identification is required for an individual client?

Individual clients are not required to have a C.R or a VAT registration number. Either of the following identifiers is accepted if available: a National ID (10 digits) or a Tax Identification Number / TIN (15 digits) — both are optional and an individual is not blocked in their absence. If the National ID in the client record conflicts with a National ID entered at the invoice level, the invoice-level value takes precedence.