0080·Further tax cannot be empty
Data formatCommon
What this means
Further tax applies to supplies made to unregistered buyers. Where it does not apply the field must still carry zero. Omitting it is treated as missing data rather than as an implicit zero.
Why it happens
- The field was populated only on invoices where further tax was charged.
- The value was null because the customer's registration status was unknown.
- Further tax was folded into the sales tax figure instead of being reported separately.
How to fix it
- 1Always send the field, using zero where the buyer is registered.
- 2Determine further tax from a verified registration status rather than an assumption.
- 3Keep it separate from sales tax — the sales tax field explicitly excludes further and extra tax.
How Ordyoo handles this
Further tax is driven by the customer's verified registration type and always emitted, defaulting to zero for registered buyers. On Third Schedule lines to unregistered buyers it can legitimately be non-zero, which the invoice layout accounts for.
Scenarios where this appears
Sandbox scenarios that commonly produce 0080.
Related errors
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