Indirect formula problem

Attached is a sample spreadsheet with a problem formula.

The Indirect formula works fine for matching ids in Section A, which starts at the top of the column, but as soon as I try to find matches in the same column for any section that starts anywhere other than the first row, I run into problems. (See column I for some comments on the errors.)

Can someone tell me what I'm doing wrong?


Thank you for all the quick help!!