You can find a lot of suitable answers to your questions in our Help-area. Please search the FAQ articles of the help section before contacting support.
Indications of missing data are not system errors. This article explains what they mean, how they can help you, and how best to address them in a simple way.
What to look out for with unsupported smart contracts to avoid errors. And: Recommendations for correct handling of unknown transactions.
If you need support beyond the FAQs – you can get expert help here.
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If your tax tool only shows error messages, it is usually one of these structural issues — not you.
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