I'm sure anyone who's used DMF much will have seen the error The column in entity %entity name% has incorrect data. Please correct the data and try the import again with two spaces between column and in clearly suggesting that there should be a column name or label there.
When Excel is being used for the input file, there are a number of suggestions
- Deleting all (apparently empty) rows after the last row of data
- Deleting all (apparently empty) columns after the last data field
- Switching filtering off
- Ensuring no formatting, hyperlinks etc. are present
Saving as a tab-separated file feels like it should achieve all of these objectives: this often subtly changes the error to The column ErrorColumn in entity User information has incorrect data. Please correct the data and try the import again. There's no ErrorColumn field in the input data, so this feels like a placeholder of some kind. Anyone have a good way of identifying the problematic data that's preventing staging insert please?