On 1040NR, what means Line22 amount? Why is it not applicable to any line?

[elonkim]

Example, 1040NR line23 is $10,000.
And Line22 is $2000 through item L of Sch OI 1040NR page5.
The amount was displayed correctly on line22($2,000). 
But line 22 income exempt didn't apply to any line. I think line23 should be $8,000, not10,000.(10,000-2,000) Why is it not applicable? 

[itonewbie · Accepted solution]

Line 22 is part of the disclosure required for taking treaty position.  Since you are claiming treaty exemption on that amount, it is not part of the US-ECI subject to tax.  If Line 23 shows $10,000, you must have other US-ECI entered on one or more lines from 8 to 21.  Why do think this is incorrect?

[elonkim]

Thanks for your help. And additional info, I didn't receive form 1042S, only got W-2. I think this is the cause.  Would you let me know your answer?