Hi
We have an issue with Composite entity that fails when we import the XML file.
As per the business requirement, there is a need to create Composite entity with following Data entities: Products V2, Released products V2, Item - bar codes V2, Product translations and Product specific Unit conversions. And these are in the below order in the Composite entity.

This composite entity successfully executed for export and import so that Released products with relevant fields (from all the above entities) were updated/created. But this was failed in one scenario where Inventory unit is different from Sales/Purchase units. This was failed due to the sequence of entities in the composite entity. As per this sequence, Unit conversions entity will execute after the Released products V2 entity is being executed so there was an error message saying that Unit conversion does not exist between Inventory unit and Purchase/Sales unit.
Hence, we have decided to change the order as below so that Unit conversions will be executed first and then Released products.
Products V2, Product specific Unit conversions, Released products V2, Item - bar codes V2, Product translations
We have created the composite entity with the above order, and we are getting the error when we try to export the XML file with this entity. Hence, we have limited the number of entities to 3 in another new composite entity.

With this entity also we are getting the same error message as shown the 3rd image.
Error log when we have exported entity

Let me know what I am missing here in creating a Composite entity.