PROBLEM - USPS: A system error has occurred and is being investigated

Shopify Discussion
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Topic summary

USPS shipping label creation in Shopify intermittently failed with the message: “USPS: A system error has occurred and is being investigated.” The issue blocked label purchases for a subset of orders (about 4 of ~40), including addresses in Puerto Rico (often not auto-verified) and at least one address in the U.S.

  • Impact: Merchants could not generate labels and reported difficulty reaching live support.
  • Vendor action: A Shopify staff member requested a screenshot to diagnose; a user uploaded an image of the error (attachment central to understanding the issue).

Estado actualizado: El problema se resolvió solo al día siguiente para la persona que abrió el hilo (“It’s back to working fine today”). Otro comerciante en español reportó el mismo error y no poder comprar la etiqueta ni contactar soporte; no se informó si también se resolvió.

Resultado y próximos pasos: Parece haber sido una interrupción temporal en la integración USPS/Shopify. No se ofreció causa raíz ni cambios confirmados (p. ej., verificación de direcciones de Puerto Rico). Recomendado: volver a intentar la compra de etiquetas y compartir capturas con soporte si persiste.

Estado del hilo: Resuelto para al menos un usuario; causa pendiente de aclaración.

Summarized with AI on January 22. AI used: gpt-5.
5

Its back to working fine today! Hopefully for you too.