Hunan Electronic Taxation Bureau needs to discuss the certification of non-deductible supplementary records with the seller. According to the relevant laws and regulations, the certification tax that has not been deducted is regarded as a waiver of deduction. It is necessary to discuss with the seller to see if the other party can issue a red-ink invoice information form to the other party, and then issue a red-ink invoice to you, first deduct it, then issue a blue-ink invoice, and then query the certification deduction on the VAT comprehensive service platform.