I received an error on B3 'US-PORT-XT IS MSSING OR INVALID, 945735 - FREIGHT FIELD IS MISSING OR INVALID'. What does it mean?

I received an error on B3 'US-PORT-XT IS MSSING OR INVALID, 945735 - FREIGHT FIELD IS MISSING OR INVALID'. What does it mean?

Check the US Port of Exit for both Invoice and Sub-Header. Should be provided accordingly.

Invoice

Sub-Header