Remark while filling TDS return of 194Q

What remark do we need to select while filling the TDS return for 194Q ?

1. Write “C” if deduction is on higher rate under section 206AA on account of non-furnishing of PAN

2. Write “S” if no deduction is in view of the provisions of sub-section (5) of section 194Q.*

3. Write “U” if the deduction is on higher rate in view of section 206AB for non-filing of return of income*

it doesnt allow to give remark of 

1. Amount Paid/Credited is Under Threshold

When i filled the return using "Amount Paid/Credited is Under Threshold" i got a error.

Error :

T_FV_6210 Invalid Remark Value provided for Section 194Q. Remarks 'C', 'S' and 'U' are applicable for this section