Hello,
I am trying to import new records for a custom entity. On the entity form there is a lookup field to Account. My file I am trying to import looks like this:

So I have added the account number field from the related account entity to be able to connect this new record to an account with account number. We have Accounts with duplicate Account names, which is why we need to use account number to identify the correct account.
But when I import this file, the new record is created but the Account has not been populated in the lookup field. What am I doing wrong?
Best Regards,
Emma