only think I can see is that my LDM has same columns in a different order, but that should not be a problem?

Yes, you will want to make sure they are in the same order. Also, please check all the formats and requirements as mentioned here: https://help.gooddata.com/doc/enterprise/en/data-integration/data-preparation-and-dis[…]tion/load-csv-files-to-your-workspace/csv-file-requirements/

actually checking again, the field order is correct. Can anyone from Good data have a look at the error message for me pls

The error is related to the format and configuration of the file. If you are still facing issues, we would need to look at the CSV file directly and the workspace you are trying to load it into. I will reach out to you via DM