Hi @andreweastop​ ,

this is typically a problem due to an absence of a join key in some features. If this is the case, use a Tester before the FeatureJoiner to filter out features without join key value.

Anyway, you can inspect the rejected feature in the Data Inspector (there should be an attribute added by the FeatureJoiner containing an explanation).

Hope that helps!

Thank you very much

to add, if you want to bypass terminating the translation:(see image). Would not recommend this setting for master or published workspace though.

thank you Alex