How do I fix SDI-00311?

Verify the ritenuta calculation matches the declared percentage. This error involves a protected field — Invoice Navigator flags it in your pipeline so your team can correct it at the source.

Is SDI-00311 a critical error?

Yes, SDI-00311 is a critical error that will cause invoice rejection. It must be fixed before submission to ensure your invoice is accepted by the recipient's system.

Can SDI-00311 be automatically fixed?

SDI-00311 involves a financial or legal field that cannot be auto-modified by policy. Invoice Navigator detects and flags this error immediately, but the correction must be made manually in your ERP or invoicing software.

Error codes · FatturaPA · Italy

SDI-00311Partly

Ritenuta d'acconto calculation error

This is the rejection, word for word: „[SDI-00311] Withholding tax (ritenuta d'acconto) amount must exactly match the base amount × declared rate calculation. Any discrepancy causes rejection.“

What to have readyThe correct figures from your bookkeeping; we show you which field is affected.

What we doVerify the ritenuta calculation matches the declared percentage.

Choose the rejected invoiceor drop it here

XRechnung XML or ZUGFeRD PDF. Checking is free · corrected file €1.90 · the first every 30 days is free · no sign-up.

What the finding looks likeExample

FindingNeeds your check · SDI-00311

From youThe correct figures

ThenChecked again

ProofSHA-256 and /verify link after the check