Income Tax E-form 71 u/s 155(20) Rule 134

is it possible to file form 71 in case of 16B (194AI) case. where income under capital gain was declared but TDS was not claimed as buyer had not filed TDS return. later it came in to notice. now question is in form 71 ” Column TAN of Deductor ” is mandatory feild. so how can we file form 71 if there is no TAN as the case is of Sec 194AI. where there is no TAN