Your GST notice period may be prior to 23.09.2019 .
Prior to 23.09.2019 - ITC utilization is as "The newly inserted Section 49A of the CGST Act provides that the input tax credit of Integrated tax has to be utilized completely before input tax credit of Central tax / State tax can be utilized for discharge of any tax liability. Further, as per the provisions of section 49 of the CGST Act, credit of Integrated tax has to be utilized first for payment of Integrated tax, then Central tax and then State tax in that order mandatorily. This led to a situation, in certain cases, where a taxpayer has to discharge his tax liability on account of one type of tax (say State tax) through electronic cash ledger, while the input tax credit on account of other type of tax (say Central tax) remains un-utilized in electronic credit ledger.
After 23.09.2019 - ITC utilization is as - The newly inserted rule 88A in the CGST Rules allows utilization of input tax credit of Integrated tax towards the payment of Central tax and State tax, or as the case may be, Union territory tax, in any order subject to the condition that the entire input tax credit on account of Integrated tax is completely exhausted first before the input tax credit on account of Central tax or State / Union territory tax can be utilized. It is clarified that after the insertion of the said rule