Mvat registration documents issue

Some Documents required for MVAT Registration - 

1. Month wise Purchase and Sales Summary and bill wise Sales Statement/ Purchase statement for the month in which threshold limit of turnover of sale/purchase (in cases where Purchase Tax is leviable} exceeded the threshold limit. 

2. Sale Bill/Purchase Bill (in cases where Purchase Tax is leviable) on which threshold limit exceeded.

3. Lorry/transport receipt of purchase of imported goods(in case of importer)

Facts of the case - 

Assesse has Outside Maharashtra Purchases of Rs. 1 lacs.. 

Assessee has sales turnover of over Rs. 5-6 lacs.. 

Assesse has sales bills/ purchase bills but those are not TAX Invoices but retail invoices

Assesse has Transport receipts..

But Assessee does not have Requirement no. 1 that is -

1. Month wise Purchase and Sales Summary and bill wise Sales Statement/ Purchase statement for the month in which threshold limit of turnover of sale/purchase (in cases where Purchase Tax is leviable) exceeded the threshold limit.

Does he need to prepare the above in Tally?? 

Or rough summary/statement kept in a register will suffice??