Line 3a: Copy the total claims from Part 1 (priority unsecured claims) from line 6e of Schedule E/F.
Line 3a pulls from line 6e on Schedule A/B, which is the total amount of certain types of unsecured claims (the total is calculated by adding lines 6a through 6d together on Schedule E/F).
To view full form instructions for Schedule E/F and see how line 6e is calculated, click here.