1. Convert your data to another accounting application to integrate with Datev.
2. If you still need to use QBO, use a connector to mirror any data you register in QBO automatically to another accounting application and integrate it with Datev.
Is the screenshot you added from QBO? If it is, I think we can solve the issue with export / import data. For your second option, which applications we can use to integrate QBO and Datev?
Let me know if you have additional questions about system integration in QBO by replying to this post. We'll be happy to help. Take care, and have a good one.