SPAPI createReport - expected behavior when submitting multiple marketplace IDs and "GET_MERCHANT_LISTINGS_ALL_DATA"

[MetaMan2023]

We are starting to work in multiple marketplaces (expanding from US to Canada)

When running this report, if we:

• Supply US marketplace ID, we get US listings
• Supply CA marketplace ID, we get CA listings
• Supply BOTH US + CA marketplace IDs, we only get US listings

It doesn't matter what order we supply US/CA id's in the array... and the report status does indicate both marketplaces were selected.

Does anyone know the expected behavior of this? Can you request a combined report?

Now that i'm thinking about it, i'm guessing it may not be allowed due to conflicting ASIN/SKU data but not 100% sure -- I would figure it would throw an error if you are not allowed, but that seems to not be the case.