EU VAT guide
MS_UNAVAILABLE VIES error
MS_UNAVAILABLE means the member-state VAT database did not respond through the VIES gateway.
Meaning
This is not the same as an invalid VAT number. It means the relevant national registry was unavailable during the check.
Retry later and avoid converting this error into a permanent invalid result in your internal systems.
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Related VIES guides
- VIES VAT checkerCheck an EU VAT number in VIES and understand what the response means.
- EU VAT number validationValidate EU VAT IDs and learn when VAT checks matter for cross-border trade.
- VIES consultation numberLearn what a VIES consultation number is and when it can appear.
- VIES errors explainedUnderstand common VIES errors such as MS_UNAVAILABLE, TIMEOUT, and SERVICE_UNAVAILABLE.
- VIES service unavailableWhat to do when VIES or a national VAT registry is unavailable.
- Is VIES down?Check whether the VIES gateway appears reachable and learn what VIES downtime means.