- Planned update of the API of the National e-Invoice System and the Taxpayer Application KSeF on the pre-production environment (Demo) on October 19, 2023, from 14:00 to 16:00.
- The update includes changes to the sample response for unauthorized requests to check the processing status based on the reference number.
- The update also includes changes to the type from SubjectNameType to SubjectCompleteNameType in SessionContextType for session start requests.
- There is also a fix for an error related to sending certain types of invoices that contain multiple previous invoice numbers.
- The update will gradually introduce improvements to the service contract to ensure data type correctness.
- The update of the Taxpayer Application KSeF includes adaptation to version 2.0.3 of the KSeF API and presenting environment information in error messages.
- Temporary difficulties in accessing these environments may occur during the update.
- Apologies for any inconvenience caused.
Source: podatki.gov.pl
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
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