I received an error '0R8 Declaration Party Identifier: Invalid Account Security Number 1F0 Declaration Party Country subdivision: Is mandatory', what does it mean?

I received an error '0R8 Declaration Party Identifier: Invalid Account Security Number 1F0 Declaration Party Country subdivision: Is mandatory', what does it mean?

Please look to the response and focus on which is causing the Invalid Account Security Number which is the Declaration Party Country. Check and if possible, make a correction on that rejection and transaction will be fix. Check the Importers information declared under the declaration tab.