Help needed: Source column header has line break within.

[mlauber71]

@knimedt welcome to the KNIME forum. You could try and clean your column names before using them. You use a regex with ‘allowed’ chacaters (you might have to add special cases like “/” if you want to keep them in your case) and remove all others:

Tree Ensemble Learner does not recognize newlines in column names (include/exclude filter does)

@tims you could use a regex function and a “Insert Column Header” node to clear your variable names. The logic is you remove everything that is not explicitly permitted. In this case a blank is OK. You might edit that to your needs. regexReplace($Column Name$,"[^a-zA-Z0-9 ]","") [image]