Invoice with incorrect calculations passed Schematron Validation

[amangou-transalis]

Hello,

During a testing for Peppol, we noticed that an invoice with incorrect calculations passed Schematron Validation successfully.

PEPPOLXML_0603914624_PASSED.zip

Example Invoice that passed validation: 0603914624 (Attached PEPPOL XML PEPPOLXML_0603914624_PASSED.xml)

This Invoice passed the validation, however, the calculations are not right.

Taxable Amount: 64.26
VAT Rate: 21%
Tax Amount: 13.22

BUT If we do the calculations manually, then Tax Amount should be 13.4946 -> Rounded to 2 decimals: 13.49.

Can you help us to understand why this is happening?

[phax]

Peppol note: the CustomizationID value urn:www.cenbii.eu:transaction:biicoretrdm001:ver1.0 seems to be very old. That is surely not a current Peppol valid Peppol document

[MartinForsberg-Ecru]

The rule BR-CO-17 allows for a slack of 1. So it seems your example falls within this margin of allowed rounding error. The slack is there to cater for an established calculation model used in some ERPs that sums up the tax amount for each line rather than calculate the subtotal x the rate. At least that's how I remember the background for introducing the slack.