Build one SKU matrix
List each product code, image, color or style, quantity and unit. Avoid combining several products under one informal nickname.
Separate stock and custom requirements
Mark standard items, custom colors, buyer artwork and special packaging separately because they may follow different confirmation steps.
Define assortment ratios
For mixed bags or sets, state the target ratio, acceptable variation and whether every design must appear in each selling unit.
Plan carton reconciliation
Agree how mixed cartons will be labeled and how totals will be reported by SKU, selling unit and carton.