When importing goods from third countries (that is, countries not belonging
to EU Member States)
document reception date served as the main criterion to be included in the
Special Input VAT Account for Import. For sake of
compliance between automatic posting of invoices
received and posting periodic VAT accounts the
VAT date is entered in VAT Date field in journal entry
lines rather than document reception date.
That is why the two dates must be equal when importing goods from third
countri.
If this is not the case, the following error is returned.

Solution:
1. Correct the date so it is the same as the VAT date.
2. Set VAT date so that it will be the same as the invoice reception date.