Dates must be YYYY-MM-DD

Every date (issue, due, tax point, delivery, period start and end) must be written as YYYY-MM-DD.

01/10/2026 is 1 October in Dubai and 10 January in an American ERP. ISO dates remove the guess.

Fails

<cbc:IssueDate>01/10/2026</cbc:IssueDate>

Fix

Reformat the date. If the source is ambiguous like 01/10/2026, decide which convention it used first. PintLint's fix reads DD/MM (the UAE norm) and asks you to confirm.

Passes

<cbc:IssueDate>2026-10-01</cbc:IssueDate>

Schematron

Context

cbc:IssueDate | cbc:DueDate | cbc:TaxPointDate | cbc:StartDate | cbc:EndDate | cbc:ActualDeliveryDate

Test

string-length(text()) = 10 and (string(.) castable as xs:date)

Official text: A date MUST be formatted YYYY-MM-DD in (ibt-002), (ibt-007), (ibt-009), (ibt-026), (ibt-072), (ibt-073), (ibt-074), (ibt-134), (ibt-135).

Official · PINT shared rules. Severity: error. Runs on UBL XML and on JSON.

Check an invoice