Voucher statutory requirement or not

Jyothis (Article) (1127 Points)

25 July 2015  

Is attachment of voucher along with a supportive document of a bill is a statutory requirement or not, especially incase of case of bank payments certain companies don't attach a voucher along with invoices such as telephone bill,purchase,etcc...

Again no supporting documents are not attached with certain petty cash payment.

Plz comment on its statutory impact.