Quick question,

Use variation and packaging.
I am able to order different variation of a cable in a roll 100m and a cable drum 500m
Use pieces of this cable in field service, so for example 70 meter and another job 30 meters.
Also i only want to sell the full size roll and drum on my website.

The problem is the 100m roll and 500m drum have a different supplier (product)number. In field service i sometimes use pieces of a roll and sometimes from a drum till there is no cable left. 

What is the best solution for this ??
My problems :
- Odoo does not know if i use pieces from a 100m roll or 500m drum in field service.
- In odoo it is not possible to use different barcodes for different packaging.
- How do i configure that i can use pieces in field service but only full lenght in website.

P.S. i use different variations for different cable types.

Thanks in advance,
Bram