S. 147 : Reassessment-Under invoicing-Cash credits-Report of commission- Reassessment proceedings initiated merely on basis of report of a Commission appointed by Central Government that there was under invoicing of exports-Held to be bad in law-Pronouncement of order-Period during which lockdown was in force in country due to COVID 19 pandemic was to be excluded. [S. 68, 148, 255, ITAT R. 35]