Hi all - anybody know when we get this,

A child item child with that combination of options already exists

I’m getting this when I’m doing a UPSERTLIST (using NetSuite UPSERT API from Boomi)

If i had to guess the error is saying you are creating a duplicate matrix child

Are you adding to a list or replacing/updating items? if updating/replacing then see if you have some sort of "replaceAll" field

Yes @battk - that’s exactly what it was. I have two values, size and dimension. I didn’t have dimension passed into matrixoptionlist. Hence it has size duplicated.