# Common validation issues with EN 16931 invoices

If you encounter validation issues with EN 16931 invoices, usually the cause is incomplete or erroneous input.

## Incomplete company data[​](#incomplete-company-data "Direct link to Incomplete company data")

Ensure to have filled in all relevant Company information in the **Team settings** at **Company entities**.

| **Field name**        | **Required** | **Notes**                                 | **Example**              |
| --------------------- | ------------ | ----------------------------------------- | ------------------------ |
| Name                  | **Yes**      | Full company name incl. legal entity      | `Test Company Ltd.`      |
| Address Line 1        | **Yes**      | Street and number                         | `Pappelallee 21`         |
| Address Line 2        | No           | Unit, Building, Floor                     |                          |
| City                  | **Yes**      |                                           | `Berlin`                 |
| State/Province/Region | No           | Depending on locale                       |                          |
| ZIP/Postal Code       | **Yes**      |                                           | `13357`                  |
| Country               | **Yes**      |                                           | `Germany`                |
| VAT ID                | **Yes**      | either VAT ID or Tax ID is required       | `DEDE999999999`          |
| Tax ID                | **Yes**      | either VAT ID or Tax ID is required       | `123/456/7890`           |
| District court        | **Yes**/No   | Required depending on your country's laws | `Berlin-Charlottenburg`  |
| Company number        | **Yes**/No   | Required depending on your country's laws | `HRB 123456`             |
| Managing Director(s)  | **Yes**/No   | Managing Directors / CEOs                 | `Test Person`            |
| IBAN                  | **Yes**      |                                           | `DE75512108001245126199` |
| BIC/SWIFT             | **Yes**      |                                           | `COBADEHD055`            |

## Reverse Charge, Exports, and other VAT rules[​](#reverse-charge-exports-and-other-vat-rules "Direct link to Reverse Charge, Exports, and other VAT rules")

If you use VAT rules like Reverse Charge, make sure to include:

* Company VAT ID
  <!-- -->
  * Set up in the **Team settings** at **Company entities**.
* Client VAT ID
  <!-- -->
  * Set up when creating/editing a client. It will automatically be added to the invoice.

Validation will fail if any of the two are missing.

## Missing/incomplete bank account numbers[​](#missingincomplete-bank-account-numbers "Direct link to Missing/incomplete bank account numbers")

If either IBAN or BIC is missing in the company settings, the resulting XML invoices might be invalid.

Set up in the **Team settings** at **Company entities**.