We need show pieces based on unit of measure i.e. how pieces per unit of measure

Product measured by unit such as m2, requires the piece count to be calculated by m2.

A tile of 1000mm x 1000mm = 1m2

And a tile of 500x500mm = 0.25m2 (4 pieces make up one unit = 1m2)

so when 3x1m2 is sold then x3 of the 1000mm tiles are deducted on inventory

or 3m2 of the 500mm tiles would be (3x4tiles) 12tiles / 12 pieces

The unit and piece count are both required on this kind of product

Naturally these fields are both required on estimates and invoices

Example:

Product measured by unit such as m2, requires the piece count to be calculated by m2.

A tile of 1000mm x 1000mm = 1m2

And a tile of 500x500mm = 0.25m2 (4 pieces make up one unit = 1m2)

so when 3x1m2 is sold then x3 of the 1000mm tiles are deducted on inventory

or 3m2 of the 500mm tiles would be (3x4tiles) 12tiles / 12 pieces

The unit and piece count are both required on this kind of product

Naturally these fields are both required on estimates and invoices