{"id":138234,"date":"2025-11-03T13:03:11","date_gmt":"2025-11-03T13:03:11","guid":{"rendered":"https:\/\/glc.pl\/?p=138234"},"modified":"2025-11-04T09:28:32","modified_gmt":"2025-11-04T09:28:32","slug":"when-the-system-is-down-offline-invoicing-failures-and-deadlines","status":"publish","type":"post","link":"https:\/\/glc.pl\/en\/blog\/when-the-system-is-down-offline-invoicing-failures-and-deadlines\/","title":{"rendered":"When the system is down \u2013 offline invoicing, failures, and deadlines"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>The National e-Invoicing System (KSeF) also brings new obligations regarding timely invoice submission. But what should you do when the system doesn\u2019t work? 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