Skip to content
English
  • There are no suggestions because the search field is empty.

What should I do with validation errors in the Payt import?

Do you see a validation error when importing into Payt? This article explains what these errors mean and how to resolve them.

Last updated: April 3, 2025

When importing data from your accounting package into Payt, you may encounter errors. These errors are divided into validation errors and warnings.

  • Validation errors (red): block the import of affected invoices or customers. You must resolve these before the data can be processed.
  • Warnings (yellow): do not block the import, but we recommend checking and correcting them.

Which validation errors can occur and how do I solve them?

Below you will find the most common validation errors and how to fix them. Click directly to a relevant error:

administration_dashboard_widget_validation_error

{House number/Postal code/City/Email} can't be blank

  • Cause: We validate the presence and completeness of (email) address data. If something is missing, this message appears.
  • Solution: Complete the missing information in your accounting software. Should the information not be required to import the customer? Contact the Payt service desk to adjust which fields are mandatory.

There is a new payment condition active on this invoice for which the follow-up has yet to be determined

  • Cause: You use payment conditions in your Payt administration (under the 'Import' tab) to determine which follow-up process an invoice should follow. This invoice uses a condition that is not yet linked to a follow-up process.
  • Solution: Contact the Payt service desk to link the payment condition to a follow-up process.

Invoice numbers must be unique - invoice number appears more than once in {accounting package}

  • Cause: The same invoice number appears multiple times in one import.
  • Solution: Adjust your accounting package so that each invoice number is unique.

Invoice number has already been taken {and origin_identifier has already been taken}

  • Cause: You are importing an invoice with a number that already exists in Payt. This may happen due to:
    • Reused invoice numbers
    • Merged or renumbered customers in your accounting package that are not yet reflected in Payt
  • Solution: If the number is reused: correct this in your accounting package. If customers were merged or renumbered: notify Payt support.

Due date cannot be earlier than the invoice date

  • Cause: The due date is before the invoice date, which causes issues with reminder scheduling.
  • Solution: Correct the invoice and due dates in your accounting package.

default_email.address, invoice_email.address or reminder_email.address is invalid

  • Cause: The provided email address does not have a valid format.
  • Solution: Check and correct the email address format in your accounting package.

Postal code is invalid

  • Cause: The postal code provided is invalid.
  • Solution: Correct the postal code in your accounting package. For international addresses, make sure the country code is correct. Payt uses the ISO Alpha-2 format (e.g. DE, NL, BE).

For international postal codes: always check that the right country code is provided for your customer.

What should I do after I've made the changes?

Have you corrected the errors in your accounting software? Then run the import again. Your errors should no longer appear.