The Inbox app provides detailed error reporting to help you handle files that fail validation. If you are missing an invoice that was supposed to enter your account, you should check the Inbox app to see if the document is there with an Error status. Files with the Processed status enter your account without any issues, while others will result in errors that prevent them from being fully accepted. This update allows you to identify exactly what caused the issue, whether the file was received via Peppol, email, or manual upload, so you can take the necessary steps to fix it.
Rejected status
The Inbox app now flags invalid documents with a Rejected status, in addition to the existing Error and Processed statuses. Use Rejected as the first signal that a document never made it into your account and needs your attention. From there, follow the steps below to inspect the error and take action.
Tip: When a document hits an error, the Activities tab now has a Copy button for the error event. It copies the file's unique identifier to your clipboard, so you can paste it straight into a support request and we can find the document faster.
How to access error details
Go to your Inbox.
Locate a document with an Error status.
Double-click the document. Banqup opens it for processing if it's still actionable, or shows its Activity Log if the document is already in Error state.
Alternatively, you can click the three dots (⋮) in the Actions column, then select View details.
For uploads that result in an error or are rejected (for example, due to an invalid file syntax or a duplicate invoice number), the upload notification now shows a redirect icon next to the file name. Click the icon to jump directly to the document's read-only view or back to the Inbox so you can investigate further without searching for the file.
Reviewing an invalid document
When you open an invalid document from your Inbox (through a double-click on it), a log of all the events related to that file appears. Look for the error entry to see exactly why it occurred.
Common error messages you may encounter include:
Duplicate document number: an invoice with this number already exists in your space.
Some values in your file have formatting issues (length, invalid characters, etc.): one or more values in the structured file don't match the expected format. The message now points you to the field to fix.
Invalid checksum: the file may be corrupted or wasn't uploaded correctly.
Invalid email address format: an email address inside the document isn't correctly written.
Wrong electronic address: the document is addressed to an identifier that doesn't match your account.
Attachment type is not supported: you tried to include a file format that Banqup cannot process.
No preview available. Unsupported file type: the file isn't a PDF, so the in-app preview is unavailable. The document is still saved and processed.
This file type is not supported: the main document file is in a format that Banqup doesn't recognise.
The file does not belong to your space: the document metadata suggests it's intended for a different Banqup space.
Correcting an invoice that failed validation
When an invoice you uploaded, or that arrived through your Email connector, fails validation, Banqup does not leave it stuck. It reprocesses the file as a standard PDF and tags it Reprocessed in your Inbox and in the Activities history.
The document then moves to Awaiting validation, where you can correct the data yourself:
Open the document from your Inbox.
Correct the fields flagged in the error message.
Save your changes.
When you save, Banqup generates a fresh electronic file from your corrections. Your original document stays in the file history, so nothing is lost.
You may see this message on the document: "Your invalid file has been reprocessed. Please correct the identified issues and validate it again."
Note: Invoices received over the Peppol network are excluded from this. They follow strict network validation rules, so a Peppol invoice that fails validation still has to be corrected and reissued by your supplier.
Peppol validation errors
You may also see Peppol validation errors. These occur because the document does not meet the EN 16931 standard required for electronic invoicing.
If the error contains a specific code (like BR-DEC-19 or UBL-DT-01), it means the document violates a specific rule of the Peppol model.
If you don't understand how to solve a specific error code, copy it and send it to our AI assistant Eva (via the messenger in the bottom right of this page) and ask her for a solution.
Important notes
Read-only view: Invoices you received over Peppol open in a read-only view that highlights the errors. Their data cannot be edited from the Inbox. Invoices you uploaded yourself, or that arrived by email, are reprocessed and become editable in Awaiting validation instead.
Action needed: Most validation errors must be fixed by the person who issued the document. If you're importing a PDF, you can fix the validation errors yourself. The imported document will hold the "Awaiting validation" status until you validate it, meaning adding all the information required to meet the Peppol EN 16931 standard. → Read more about validating documents
For invoices you received (did not import yourself), you can use the Download button to inspect the file locally before contacting your supplier for a corrected version. You cannot fix it yourself.
The Try Again option does not appear on system errors where a simple retry would not resolve the underlying file issue, for example a malformed XML structure. For invoices you uploaded or received by email, Banqup reprocesses the file as a PDF so you can correct it in Awaiting validation. For Peppol invoices, ask your supplier for a corrected version.
FAQ
Can I fix an e-invoice I received from a supplier?
It depends on how the invoice reached you. E-invoices received over Peppol are read-only in your Inbox. If one is rejected, contact the supplier and ask them to issue a corrected version. Invoices that arrived through your Email connector, or that you uploaded yourself, are reprocessed as a PDF and moved to Awaiting validation, where you can correct the data and validate it yourself.
What's the difference between Error, Rejected, Reprocessed, and Processed status?
Processed: the document entered your account successfully.
Error: there's something wrong with the file, for example the format is not supported.
Rejected: the document never entered your account because it's not compliant with the EN 16931 standard.
Reprocessed: the file failed validation, and Banqup converted it to a PDF so you can correct it. Look for it in Awaiting validation.
Can I fix a PDF I imported myself?
Yes. PDFs you upload yourself hold the Awaiting validation status until you complete them. You can add the information required to meet the Peppol EN 16931 standard and validate the document from your side. This only applies to documents you imported, not to e-invoices you received from a supplier.