What is Electronic tax liability register?

Electronic tax liability register is a register to be maintained in the common portal of GST in FORM GST PMT-01 to record all liabilities of a taxable person. Part-I is for recording return related liabilities and Part-II is for recording other than return related liabilities

(ICAI FAQ PUBLICATIONS 06-09-2017 PAYMENT OF TAX,INTEREST , PENALTY AND OTHER AMOUNTS : FAQ NO.1)