Volume unit in MM01

For one reporting process, i need to have 3 fields in standard MM01 Basic data 1 view where i can use it for

Old material Number: AP/KA/MH (for entering state)

Volume : 80/90/120/130 (whether 80 inch or 90 inch like thickness)

Unit: GSM (new unit)

Size/Dimensions: 23"X36"(dimension of the paper)

Does this volume plays any role if i maintain unit of measure as Sheet and Aum is Yard.